English Dictionary: partial derivative | by the DICT Development Group |
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From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Toluic \To*lu"ic\, a. (Chem.) Pertaining to, or designating, one of three metameric acids, {CH3.C6H4.CO2H}, which are related to toluene and analogous to benzoic acids. They are white crystalline substances, and are called respectively {orthotoluic} acid, {metatoluic} acid, and {paratoluic} acid. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Toluidine \To*lu"i*dine\, n. (Chem.) Any one of three metameric amido derivatives of toluene analogous to aniline, and called respectively {orthtoluidine}, {metatoluidine}, and {paratoluidine}; especially, the commonest one, or {paratoluidine}, which is obtained as a white crystalline substance. Note: It is used in the aniline dye industry, and constitutes the essential nucleus or radical of those dyes. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Pardale \Par"dale\ (p[aum]r"d[asl]l), n. [L. pardalis, Gr. pa`rdalis. Cf. {Pard}.] (Zo[94]l.) A leopard. [Obs.] --Spenser. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Diamond \Di"a*mond\ (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. [?]. Perh. the corruption is due to the influence of Gr. [?] transparent. See {Adamant}, {Tame}.] 1. A precious stone or gem excelling in brilliancy and beautiful play of prismatic colors, and remarkable for extreme hardness. Note: The diamond is native carbon in isometric crystals, often octahedrons with rounded edges. It is usually colorless, but some are yellow, green, blue, and even black. It is the hardest substance known. The diamond as found in nature (called a rough diamond) is cut, for use in jewelry, into various forms with many reflecting faces, or facets, by which its brilliancy is much increased. See {Brilliant}, {Rose}. Diamonds are said to be of the first water when very transparent, and of the second or third water as the transparency decreases. 2. A geometrical figure, consisting of four equal straight lines, and having two of the interior angles acute and two obtuse; a rhombus; a lozenge. 3. One of a suit of playing cards, stamped with the figure of a diamond. 4. (Arch.) A pointed projection, like a four-sided pyramid, used for ornament in lines or groups. 5. (Baseball) The infield; the square space, 90 feet on a side, having the bases at its angles. 6. (Print.) The smallest kind of type in English printing, except that called brilliant, which is seldom seen. Note: [b5] This line is printed in the type called {Diamond}. {Black diamond}, coal; (Min.) See {Carbonado}. {Bristol diamond}. See {Bristol stone}, under {Bristol}. {Diamond beetle} (Zo[94]l.), a large South American weevil ({Entimus imperialis}), remarkable for its splendid luster and colors, due to minute brilliant scales. {Diamond bird} (Zo[94]l.), a small Australian bird ({Pardalotus punctatus}, family {Ampelid[91]}.). It is black, with white spots. {Diamond drill} (Engin.), a rod or tube the end of which is set with black diamonds; -- used for perforating hard substances, esp. for boring in rock. {Diamond finch} (Zo[94]l.), a small Australian sparrow, often kept in a cage. Its sides are black, with conspicuous white spots, and the rump is bright carmine. {Diamond groove} (Iron Working), a groove of V-section in a roll. {Diamond mortar} (Chem.), a small steel mortar used for pulverizing hard substances. {Diamond-point tool}, a cutting tool whose point is diamond-shaped. {Diamond snake} (Zo[94]l.), a harmless snake of Australia ({Morelia spilotes}); the carpet snake. {Glazier's diamond}, a small diamond set in a glazier's tool, for cutting glass. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Forty-spot \For"ty-spot`\, n. (Zo[94]l.) The Tasmanian forty-spotted diamond bird ({Pardalotus quadragintus}). | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Parietal \Pa*ri"e*tal\, n. 1. (Anat.) One of the parietal bones. 2. (Zo[94]l.) One of the special scales, or plates, covering the back of the head in certain reptiles and fishes. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Parietal \Pa*ri"e*tal\, a. [L. parietalis, fr. paries, -ietis, a wall: cf. F. pari[82]tal. Cf. {Parietary}, {Pellitory}.] 1. Of or pertaining to a wall; hence, pertaining to buildings or the care of them. 2. Resident within the walls or buildings of a college. At Harvard College, the officers resident within the college walls constitute a permanent standing committee, called the Parietal Committee. --B. H. Hall (1856). 3. (Anat.) (a) Of pertaining to the parietes. (b) Of, pertaining to, or in the region of, the parietal bones, which form the upper and middle part of the cranium, between the frontals and occipitals. 4. (Bot.) Attached to the main wall of the ovary, and not to the axis; -- said of a placenta. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partial \Par"tial\, a. [F., fr. LL. partials, fr. L. pars, gen. partis, a part; cf. (for sense 1) F. partiel. See {Part}, n.] 1. Of, pertaining to, or affecting, a part only; not general or universal; not total or entire; as, a partial eclipse of the moon. [bd]Partial dissolutions of the earth.[b8] --T. Burnet. 2. Inclined to favor one party in a cause, or one side of a question, more then the other; baised; not indifferent; as, a judge should not be partial. Ye have been partial in the law. --Mal. ii. 9. 3. Having a predelection for; inclined to favor unreasonably; foolishly fond. [bd]A partial parent.[b8] --Pope. Not partial to an ostentatious display. --Sir W. Scott. 4. (Bot.) Pertaining to a subordinate portion; as, a compound umbel is made up of a several partial umbels; a leaflet is often supported by a partial petiole. {Partial differentials}, {Partial differential coefficients}, {Partial differentiation}, etc. (of a function of two or more variables), the differentials, differential coefficients, differentiation etc., of the function, upon the hypothesis that some of the variables are for the time constant. {Partial fractions} (Alg.), fractions whose sum equals a given fraction. {Partial tones} (Music), the simple tones which in combination form an ordinary tone; the overtones, or harmonics, which, blending with a fundamental tone, cause its special quality of sound, or timbre, or tone color. See, also, {Tone}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Differential \Dif`fer*en"tial\, n. 1. (Math.) An increment, usually an indefinitely small one, which is given to a variable quantity. Note: According to the more modern writers upon the differential and integral calculus, if two or more quantities are dependent on each other, and subject to increments of value, their differentials need not be small, but are any quantities whose ratios to each other are the limits to which the ratios of the increments approximate, as these increments are reduced nearer and nearer to zero. 2. A small difference in rates which competing railroad lines, in establishing a common tariff, allow one of their number to make, in order to get a fair share of the business. The lower rate is called a differential rate. Differentials are also sometimes granted to cities. 3. (Elec.) (a) One of two coils of conducting wire so related to one another or to a magnet or armature common to both, that one coil produces polar action contrary to that of the other. (b) A form of conductor used for dividing and distributing the current to a series of electric lamps so as to maintain equal action in all. --Knight. {Partial differential} (Math.), the differential of a function of two or more variables, when only one of the variables receives an increment. {Total differential} (Math.), the differential of a function of two or more variables, when each of the variables receives an increment. The total differential of the function is the sum of all the {partial differentials}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partial \Par"tial\, a. [F., fr. LL. partials, fr. L. pars, gen. partis, a part; cf. (for sense 1) F. partiel. See {Part}, n.] 1. Of, pertaining to, or affecting, a part only; not general or universal; not total or entire; as, a partial eclipse of the moon. [bd]Partial dissolutions of the earth.[b8] --T. Burnet. 2. Inclined to favor one party in a cause, or one side of a question, more then the other; baised; not indifferent; as, a judge should not be partial. Ye have been partial in the law. --Mal. ii. 9. 3. Having a predelection for; inclined to favor unreasonably; foolishly fond. [bd]A partial parent.[b8] --Pope. Not partial to an ostentatious display. --Sir W. Scott. 4. (Bot.) Pertaining to a subordinate portion; as, a compound umbel is made up of a several partial umbels; a leaflet is often supported by a partial petiole. {Partial differentials}, {Partial differential coefficients}, {Partial differentiation}, etc. (of a function of two or more variables), the differentials, differential coefficients, differentiation etc., of the function, upon the hypothesis that some of the variables are for the time constant. {Partial fractions} (Alg.), fractions whose sum equals a given fraction. {Partial tones} (Music), the simple tones which in combination form an ordinary tone; the overtones, or harmonics, which, blending with a fundamental tone, cause its special quality of sound, or timbre, or tone color. See, also, {Tone}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partial \Par"tial\, a. [F., fr. LL. partials, fr. L. pars, gen. partis, a part; cf. (for sense 1) F. partiel. See {Part}, n.] 1. Of, pertaining to, or affecting, a part only; not general or universal; not total or entire; as, a partial eclipse of the moon. [bd]Partial dissolutions of the earth.[b8] --T. Burnet. 2. Inclined to favor one party in a cause, or one side of a question, more then the other; baised; not indifferent; as, a judge should not be partial. Ye have been partial in the law. --Mal. ii. 9. 3. Having a predelection for; inclined to favor unreasonably; foolishly fond. [bd]A partial parent.[b8] --Pope. Not partial to an ostentatious display. --Sir W. Scott. 4. (Bot.) Pertaining to a subordinate portion; as, a compound umbel is made up of a several partial umbels; a leaflet is often supported by a partial petiole. {Partial differentials}, {Partial differential coefficients}, {Partial differentiation}, etc. (of a function of two or more variables), the differentials, differential coefficients, differentiation etc., of the function, upon the hypothesis that some of the variables are for the time constant. {Partial fractions} (Alg.), fractions whose sum equals a given fraction. {Partial tones} (Music), the simple tones which in combination form an ordinary tone; the overtones, or harmonics, which, blending with a fundamental tone, cause its special quality of sound, or timbre, or tone color. See, also, {Tone}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partial \Par"tial\, a. [F., fr. LL. partials, fr. L. pars, gen. partis, a part; cf. (for sense 1) F. partiel. See {Part}, n.] 1. Of, pertaining to, or affecting, a part only; not general or universal; not total or entire; as, a partial eclipse of the moon. [bd]Partial dissolutions of the earth.[b8] --T. Burnet. 2. Inclined to favor one party in a cause, or one side of a question, more then the other; baised; not indifferent; as, a judge should not be partial. Ye have been partial in the law. --Mal. ii. 9. 3. Having a predelection for; inclined to favor unreasonably; foolishly fond. [bd]A partial parent.[b8] --Pope. Not partial to an ostentatious display. --Sir W. Scott. 4. (Bot.) Pertaining to a subordinate portion; as, a compound umbel is made up of a several partial umbels; a leaflet is often supported by a partial petiole. {Partial differentials}, {Partial differential coefficients}, {Partial differentiation}, etc. (of a function of two or more variables), the differentials, differential coefficients, differentiation etc., of the function, upon the hypothesis that some of the variables are for the time constant. {Partial fractions} (Alg.), fractions whose sum equals a given fraction. {Partial tones} (Music), the simple tones which in combination form an ordinary tone; the overtones, or harmonics, which, blending with a fundamental tone, cause its special quality of sound, or timbre, or tone color. See, also, {Tone}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Fraction \Frac"tion\, n. [F. fraction, L. fractio a breaking, fr. frangere, fractum, to break. See {Break}.] 1. The act of breaking, or state of being broken, especially by violence. [Obs.] Neither can the natural body of Christ be subject to any fraction or breaking up. --Foxe. 2. A portion; a fragment. Some niggard fractions of an hour. --Tennyson. 3. (Arith. or Alg.) One or more aliquot parts of a unit or whole number; an expression for a definite portion of a unit or magnitude. {Common, [or] Vulgar}, {fraction}, a fraction in which the number of equal parts into which the integer is supposed to be divided is indicated by figures or letters, called the denominator, written below a line, over which is the numerator, indicating the number of these parts included in the fraction; as [frac12], one half, [frac25], two fifths. {Complex fraction}, a fraction having a fraction or mixed number in the numerator or denominator, or in both. --Davies & Peck. {Compound fraction}, a fraction of a fraction; two or more fractions connected by of. {Continued fraction}, {Decimal fraction}, {Partial fraction}, etc. See under {Continued}, {Decimal}, {Partial}, etc. {Improper fraction}, a fraction in which the numerator is greater than the denominator. {Proper fraction}, a fraction in which the numerator is less than the denominator. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partial \Par"tial\, a. [F., fr. LL. partials, fr. L. pars, gen. partis, a part; cf. (for sense 1) F. partiel. See {Part}, n.] 1. Of, pertaining to, or affecting, a part only; not general or universal; not total or entire; as, a partial eclipse of the moon. [bd]Partial dissolutions of the earth.[b8] --T. Burnet. 2. Inclined to favor one party in a cause, or one side of a question, more then the other; baised; not indifferent; as, a judge should not be partial. Ye have been partial in the law. --Mal. ii. 9. 3. Having a predelection for; inclined to favor unreasonably; foolishly fond. [bd]A partial parent.[b8] --Pope. Not partial to an ostentatious display. --Sir W. Scott. 4. (Bot.) Pertaining to a subordinate portion; as, a compound umbel is made up of a several partial umbels; a leaflet is often supported by a partial petiole. {Partial differentials}, {Partial differential coefficients}, {Partial differentiation}, etc. (of a function of two or more variables), the differentials, differential coefficients, differentiation etc., of the function, upon the hypothesis that some of the variables are for the time constant. {Partial fractions} (Alg.), fractions whose sum equals a given fraction. {Partial tones} (Music), the simple tones which in combination form an ordinary tone; the overtones, or harmonics, which, blending with a fundamental tone, cause its special quality of sound, or timbre, or tone color. See, also, {Tone}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partial \Par"tial\, a. [F., fr. LL. partials, fr. L. pars, gen. partis, a part; cf. (for sense 1) F. partiel. See {Part}, n.] 1. Of, pertaining to, or affecting, a part only; not general or universal; not total or entire; as, a partial eclipse of the moon. [bd]Partial dissolutions of the earth.[b8] --T. Burnet. 2. Inclined to favor one party in a cause, or one side of a question, more then the other; baised; not indifferent; as, a judge should not be partial. Ye have been partial in the law. --Mal. ii. 9. 3. Having a predelection for; inclined to favor unreasonably; foolishly fond. [bd]A partial parent.[b8] --Pope. Not partial to an ostentatious display. --Sir W. Scott. 4. (Bot.) Pertaining to a subordinate portion; as, a compound umbel is made up of a several partial umbels; a leaflet is often supported by a partial petiole. {Partial differentials}, {Partial differential coefficients}, {Partial differentiation}, etc. (of a function of two or more variables), the differentials, differential coefficients, differentiation etc., of the function, upon the hypothesis that some of the variables are for the time constant. {Partial fractions} (Alg.), fractions whose sum equals a given fraction. {Partial tones} (Music), the simple tones which in combination form an ordinary tone; the overtones, or harmonics, which, blending with a fundamental tone, cause its special quality of sound, or timbre, or tone color. See, also, {Tone}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partialism \Par"tial*ism\, n. Partiality; specifically (Theol.), the doctrine of the Partialists. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partialist \Par"tial*ist\ n. 1. One who is partial. [R.] 2. (Theol.) One who holds that the atonement was made only for a part of mankind, that is, for the elect. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partiality \Par`ti*al"i*ty\ (?; 277), n. [Cf. F. partialit[82].] 1. The quality or state of being partial; inclination to favor one party, or one side of a question, more than the other; undue bias of mind. 2. A predilection or inclination to one thing rather than to others; special taste or liking; as, a partiality for poetry or painting. --Roget. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partialize \Par"tial*ize\, v. t. & i. To make or be partial. [R.] | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partially \Par"tial*ly\ adv. 1. In part; not totally; as, partially true; the sun partially eclipsed. --Sir T. Browne. 2. In a partial manner; with undue bias of mind; with unjust favor or dislike; as, to judge partially. --Shak. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partlet \Part"let\, n. [Dim. of part.] 1. A covering for the neck, and sometimes for the shoulders and breast; originally worn by both sexes, but laterby women alone; a ruff. [Obs.] --Fuller. 2. A hen; -- so called from the ruffing of her neck feathers. [bd]Dame Partlett, the hen.[b8] --Shak. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Partly \Part"ly\, adv. In part; in some measure of degree; not wholly. [bd]I partly believe it.[b8] --1 Cor. xi. 18. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Party \Par"ty\, n.; pl. {Parties}. [F. parti and partie, fr. F. partir to part, divide, L. partire, partiri. See {Part}, v.] 1. A part or portion. [Obs.] [bd]The most party of the time.[b8] --Chaucer. 2. A number of persons united in opinion or action, as distinguished from, or opposed to, the rest of a community or association; esp., one of the parts into which a people is divided on questions of public policy. Win the noble Brutus to our party. --Shak. The peace both parties want is like to last. --Dryden. 3. A part of a larger body of company; a detachment; especially (Mil.), a small body of troops dispatched on special service. 4. A number of persons invited to a social entertainment; a select company; as, a dinner party; also, the entertainment itself; as, to give a party. 5. One concerned or interested in an affair; one who takes part with others; a participator; as, he was a party to the plot; a party to the contract. 6. The plaintiff or the defendant in a lawsuit, whether an individual, a firm, or corporation; a litigant. The cause of both parties shall come before the judges. --Ex. xxii. 9. 7. Hence, any certain person who is regarded as being opposed or antagonistic to another. It the jury found that the party slain was of English race, it had been adjudged felony. --Sir J. Davies. 8. Cause; side; interest. Have you nothing said Upon this Party 'gainst the Duke of Albany? --Shak. 9. A person; as, he is a queer party. [Now accounted a vulgarism.] Note: [bd]For several generations, our ancestors largely employed party for person; but this use of the word, when it appeared to be reviving, happened to strike, more particularly, the fancy of the vulgar; and the consequence has been, that the polite have chosen to leave it in their undisputed possession.[b8] --Fitzed. Hall. {Party jury} (Law), a jury composed of different parties, as one which is half natives and half foreigners. {Party man}, a partisan. --Swift. {Party spirit}, a factious and unreasonable temper, not uncommonly shown by party men. --Whately. {Party verdict}, a joint verdict. --Shak. {Party wall}. (a) (Arch.) A wall built upon the dividing line between two adjoining properties, usually having half its thickness on each property. (b) (Law) A wall that separates adjoining houses, as in a block or row. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Perduellion \Per`du*el"lion\, n. [L. perduellio; per + duellum, bellum, war.] (Civil Law) Treason. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Perdulous \Per"du*lous\, a. [See {Perdu}, a.] Lost; thrown away. [Obs.] --Abp. Bramhall. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Perradial \Per*ra"di*al\, a. (Zo[94]l.) Situated around the radii, or radial tubes, of a radiate. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Pertly \Pert"ly\, adv. In a pert manner. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Port \Port\, n. [F. porte, L. porta, akin to portus; cf. AS. porte, fr. L. porta. See {Port} a harbor, and cf. {Porte}.] 1. A passageway; an opening or entrance to an inclosed place; a gate; a door; a portal. [Archaic] Him I accuse The city ports by this hath entered. --Shak. Form their ivory port the cherubim Forth issuing. --Milton. 2. (Naut.) An opening in the side of a vessel; an embrasure through which cannon may be discharged; a porthole; also, the shutters which close such an opening. Her ports being within sixteen inches of the water. --Sir W. Raleigh. 3. (Mach.) A passageway in a machine, through which a fluid, as steam, water, etc., may pass, as from a valve to the interior of the cylinder of a steam engine; an opening in a valve seat, or valve face. {Air port}, {Bridle port}, etc. See under {Air}, {Bridle}, etc. {Port bar} (Naut.), a bar to secure the ports of a ship in a gale. {Port lid} (Naut.), a lid or hanging for closing the portholes of a vessel. {Steam port}, [and] {Exhaust port} (Steam Engine), the ports of the cylinder communicating with the valve or valves, for the entrance or exit of the steam, respectively. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Peering in maps for ports and piers and roads. --Shak. We are in port if we have Thee. --Keble. 2. In law and commercial usage, a harbor where vessels are admitted to discharge and receive cargoes, from whence they depart and where they finish their voyages. {Free port}. See under {Free}. {Port bar}. (Naut,) (a) A boom. See {Boom}, 4, also {Bar}, 3. (b) A bar, as of sand, at the mouth of, or in, a port. {Port charges} (Com.), charges, as wharfage, etc., to which a ship or its cargo is subjected in a harbor. {Port of entry}, a harbor where a customhouse is established for the legal entry of merchandise. {Port toll} (Law), a payment made for the privilege of bringing goods into port. {Port warden}, the officer in charge of a port; a harbor master. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portal \Por"tal\, a. (Anat.) Of or pertaining to a porta, especially the porta of the liver; as, the portal vein, which enters the liver at the porta, and divides into capillaries after the manner of an artery. Note: Portal is applied to other veins which break up into capillaries; as, the renal portal veins in the frog. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portal \Por"tal\, n. [OF. portal, F. portail, LL. portale, fr. L. porta a gate. See {Port} a gate.] 1. A door or gate; hence, a way of entrance or exit, especially one that is grand and imposing. Thick with sparkling orient gems The portal shone. --Milton. From out the fiery portal of the east. --Shak. 2. (Arch.) (a) The lesser gate, where there are two of different dimensions. (b) Formerly, a small square corner in a room separated from the rest of the apartment by wainscoting, forming a short passage to another apartment. (c) By analogy with the French portail, used by recent writers for the whole architectural composition which surrounds and includes the doorways and porches of a church. 3. (Bridge Building) The space, at one end, between opposite trusses when these are terminated by inclined braces. 4. A prayer book or breviary; a portass. [Obs.] {Portal bracing} (Bridge Building), a combination of struts and ties which lie in the plane of the inclined braces at a portal, serving to transfer wind pressure from the upper parts of the trusses to an abutment or pier of the bridge. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portal \Por"tal\, n. [OF. portal, F. portail, LL. portale, fr. L. porta a gate. See {Port} a gate.] 1. A door or gate; hence, a way of entrance or exit, especially one that is grand and imposing. Thick with sparkling orient gems The portal shone. --Milton. From out the fiery portal of the east. --Shak. 2. (Arch.) (a) The lesser gate, where there are two of different dimensions. (b) Formerly, a small square corner in a room separated from the rest of the apartment by wainscoting, forming a short passage to another apartment. (c) By analogy with the French portail, used by recent writers for the whole architectural composition which surrounds and includes the doorways and porches of a church. 3. (Bridge Building) The space, at one end, between opposite trusses when these are terminated by inclined braces. 4. A prayer book or breviary; a portass. [Obs.] {Portal bracing} (Bridge Building), a combination of struts and ties which lie in the plane of the inclined braces at a portal, serving to transfer wind pressure from the upper parts of the trusses to an abutment or pier of the bridge. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Porthole \Port"hole`\, n. (Naut.) An embrasure in a ship's side. See 3d {Port}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portland cement \Port"land ce*ment"\ A cement having the color of the Portland stone of England, made by calcining an artificial mixture of carbonate of lime and clay, or sometimes certain natural limestones or chalky clays. It contains a large proportion of clay, and hardens under water. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Sago \Sa"go\ (s[amac]"g[osl]), n. [Malay. s[amac]gu.] A dry granulated starch imported from the East Indies, much used for making puddings and as an article of diet for the sick; also, as starch, for stiffening textile fabrics. It is prepared from the stems of several East Indian and Malayan palm trees, but chiefly from the {Metroxylon Sagu}; also from several cycadaceous plants ({Cycas revoluta}, {Zamia integrifolia}, etc.). {Portland sago}, a kind of sago prepared from the corms of the cuckoopint ({Arum maculatum}). {Sago palm}. (Bot.) (a) A palm tree which yields sago. (b) A species of Cycas ({Cycas revoluta}). {Sago spleen} (Med.), a morbid condition of the spleen, produced by amyloid degeneration of the organ, in which a cross section shows scattered gray translucent bodies looking like grains of sago. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portland stone \Port"land stone"\ A yellowish-white calcareous freestone from the Isle of Portland in England, much used in building. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portland vase \Port"land vase`\ A celebrated cinerary urn or vase found in the tomb of the Emperor Alexander Severus. It is owned by the Duke of Portland, and kept in the British Museum. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portlast \Port"last\, n. (Naut.) The portoise. See {Portoise}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portliness \Port"li*ness\, n. 1. The quality or state of being portly; dignity of mien or of personal appearance; stateliness. Such pride is praise; such portliness is honor. --Spenser. 2. Bulkiness; corpulence. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portly \Port"ly\, a. [From {Port} demeanor.] 1. Having a dignified port or mien; of a noble appearance; imposing. 2. Bulky; corpulent. [bd]A portly personage.[b8] --Dickens. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
d8Portulaca \[d8]Por`tu*la"ca\, n. [L., purslane.] (Bot.) A genus of polypetalous plants; also, any plant of the genus. Note: {Portulaca oleracea} is the common purslane. {P. grandiflora} is a South American herb, widely cultivated for its showy crimson, scarlet, yellow, or white, ephemeral blossoms. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Purslane \Purs"lane\, n. [OF. porcelaine, pourcelaine (cf. It. porcellana), corrupted fr. L. porcilaca for portulaca.] (Bot.) An annual plant ({Portulaca oleracea}), with fleshy, succulent, obovate leaves, sometimes used as a pot herb and for salads, garnishing, and pickling. {Flowering purslane}, [or] {Great flowered purslane}, the {Portulaca grandiflora}. See {Portulaca}. {Purslane tree}, a South African shrub ({Portulacaria Afra}) with many small opposite fleshy obovate leaves. {Sea purslane}, a seashore plant ({Arenaria peploides}) with crowded opposite fleshy leaves. {Water purslane}, an aquatic plant ({Ludwiqia palustris}) but slightly resembling purslane. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portulacaceous \Por`tu*la*ca"ceous\, a. (Bot.) Of or pertaining to a natural order of plants ({Portulacace[91]}), of which Portulaca is the type, and which includes also the spring beauty ({Claytonia}) and other genera. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Portulacaceous \Por`tu*la*ca"ceous\, a. (Bot.) Of or pertaining to a natural order of plants ({Portulacace[91]}), of which Portulaca is the type, and which includes also the spring beauty ({Claytonia}) and other genera. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Pr91dial \Pr[91]"di*al\, a. See {Predial}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prattle \Prat"tle\, v. i. [imp. & p. p. {Prattled}; p. pr. & vb. n. {Prattling}.] [Freq. of prate.] To talk much and idly; to prate; hence, to talk lightly and artlessly, like a child; to utter child's talk. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prattle \Prat"tle\, v. t. To utter as prattle; to babble; as, to prattle treason. --Addison. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prattle \Prat"tle\, n. Trifling or childish tattle; empty talk; loquacity on trivial subjects; prate; babble. Mere prattle, without practice. --Shak. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prattle \Prat"tle\, v. i. [imp. & p. p. {Prattled}; p. pr. & vb. n. {Prattling}.] [Freq. of prate.] To talk much and idly; to prate; hence, to talk lightly and artlessly, like a child; to utter child's talk. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prattlement \Prat"tle*ment\, n. Prattle. [R.] --Jeffrey. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prattler \Prat"tler\, n. One who prattles. --Herbert. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prattle \Prat"tle\, v. i. [imp. & p. p. {Prattled}; p. pr. & vb. n. {Prattling}.] [Freq. of prate.] To talk much and idly; to prate; hence, to talk lightly and artlessly, like a child; to utter child's talk. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Predal \Pre"dal\, a. [L. praeda prey.] Of or pertaining to prey; plundering; predatory. [R.] --Boyse. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Predeliberation \Pre`de*lib`er*a"tion\, n. Previous deliberation. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Predelineation \Pre`de*lin`e*a"tion\, n. Previous delineation. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Predial \Pre"di*al\, a. [L. praedium a farm, estate: cf. F. pr[82]dial.] 1. Consisting of land or farms; landed; as, predial estate; that is, real estate. --Ayliffe. 2. Attached to land or farms; as, predial slaves. 3. Issuing or derived from land; as, predial tithes. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Servitude \Serv"i*tude\, n. [L. servitudo: cf. F. servitude.] 1. The state of voluntary or compulsory subjection to a master; the condition of being bound to service; the condition of a slave; slavery; bondage; hence, a state of slavish dependence. You would have sold your king to slaughter, His princes and his peers to servitude. --Shak. A splendid servitude; . . . for he that rises up early, and goe[?] to bed late, only to receive addresses, is really as much abridged in his freedom as he that waits to present one. --South. 2. Servants, collectively. [Obs.] After him a cumbrous train Of herds and flocks, and numerous servitude. --Milton. 3. (Law) A right whereby one thing is subject to another thing or person for use or convenience, contrary to the common right. Note: The object of a servitude is either to suffer something to be done by another, or to omit to do something, with respect to a thing. The easements of the English correspond in some respects with the servitudes of the Roman law. Both terms are used by common law writers, and often indiscriminately. The former, however, rather indicates the right enjoyed, and the latter the burden imposed. --Ayliffe. Erskine. E. Washburn. {Penal servitude}. See under {Penal}. {Personal servitude} (Law), that which arises when the use of a thing is granted as a real right to a particular individual other than the proprietor. {Predial servitude} (Law), that which one estate owes to another estate. When it related to lands, vineyards, gardens, or the like, it is called rural; when it related to houses and buildings, it is called urban. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Whose perfection far excelled Hers in all real dignity. --Milton. 5. Relating to things, not to persons. [Obs.] Many are perfect in men's humors that are not greatly capable of the real part of business. --Bacon. 4. (Alg.) Having an assignable arithmetical or numerical value or meaning; not imaginary. 5. (Law) Pertaining to things fixed, permanent, or immovable, as to lands and tenements; as, real property, in distinction from personal or movable property. {Chattels real} (Law), such chattels as are annexed to, or savor of, the realty, as terms for years of land. See {Chattel}. {Real action} (Law), an action for the recovery of real property. {Real assets} (Law), lands or real estate in the hands of the heir, chargeable with the debts of the ancestor. {Real composition} (Eccl. Law), an agreement made between the owner of lands and the parson or vicar, with consent of the ordinary, that such lands shall be discharged from payment of tithes, in consequence of other land or recompense given to the parson in lieu and satisfaction thereof. --Blackstone. {Real estate} [or] {property}, lands, tenements, and hereditaments; freehold interests in landed property; property in houses and land. --Kent. --Burrill. {Real presence} (R. C. Ch.), the actual presence of the body and blood of Christ in the eucharist, or the conversion of the substance of the bread and wine into the real body and blood of Christ; transubstantiation. In other churches there is a belief in a form of real presence, not however in the sense of transubstantiation. {Real servitude}, called also {Predial servitude} (Civil Law), a burden imposed upon one estate in favor of another estate of another proprietor. --Erskine. --Bouvier. Syn: Actual; true; genuine; authentic. Usage: {Real}, {Actual}. Real represents a thing to be a substantive existence; as, a real, not imaginary, occurrence. Actual refers to it as acted or performed; and, hence, when we wish to prove a thing real, we often say, [bd]It actually exists,[b8] [bd]It has actually been done.[b8] Thus its really is shown by its actually. Actual, from this reference to being acted, has recently received a new signification, namely, present; as, the actual posture of affairs; since what is now in action, or going on, has, of course, a present existence. An actual fact; a real sentiment. For he that but conceives a crime in thought, Contracts the danger of an actual fault. --Dryden. Our simple ideas are all real; all agree to the reality of things. --Locke. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Predilect \Pre`di*lect"\, v. t. To elect or choose beforehand. [R.] --Walter Harte. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Predilection \Pre`di*lec"tion\, n. [Pref. pre- + L. dilectus, p. p. diligere to prefer: cf. F. pr[82]dilection. See {Diligent}.] A previous liking; a prepossession of mind in favor of something; predisposition to choose or like; partiality. --Burke. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prettily \Pret"ti*ly\, adv. In a pretty manner. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prideless \Pride"less\, a. Without pride. --Chaucer. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
d8Tocororo \[d8]To*co*ro"ro\, n. [Probably from the native name through the Spanish: cf. Sp. tocororo.] (Zo[94]l.) A cuban trogon ({Priotelus temnurus}) having a serrated bill and a tail concave at the end. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prittle-prattle \Prit"tle-prat`tle\, n. [See {Prattle}.] Empty talk; trifling loquacity; prattle; -- used in contempt or ridicule. [Colloq.] --Abp. Bramhall. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Proatlas \Pro*at"las\, n. [Pref. pro- + atlas.] (Anat.) A vertebral rudiment in front of the atlas in some reptiles. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Proteles \Pro"te*les\, n. [NL.] (Zo[94]l.) A South Africa genus of Carnivora, allied to the hyenas, but smaller and having weaker jaws and teeth. It includes the aard-wolf. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
d8Aard-wolf \[d8]Aard"-wolf`\ ([aum]rd"w[oocr]lf), n. [D, earth-wolf] (Zo[94]l.) A carnivorous quadruped ({Proteles Lalandii}), of South Africa, resembling the fox and hyena. See {Proteles}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Proteolytic \Pro`te*o*lyt"ic\, a. [Proteid + Gr. [?] to loose.] (Physiol.) Converting proteid or albuminous matter into soluble and diffusible products, as peptones. [bd] The proteolytic ferment of the pancreas.[b8] --Foster. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prothalamion \Pro`tha*la"mi*on\, Prothalamium \Pro`tha*la"mi*um\, n. [NL., fr. Gr. [?] before + [?] chamber, especially, the bridal chamber.] A song in celebration of a marriage. --Drayton. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prothalamion \Pro`tha*la"mi*on\, Prothalamium \Pro`tha*la"mi*um\, n. [NL., fr. Gr. [?] before + [?] chamber, especially, the bridal chamber.] A song in celebration of a marriage. --Drayton. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
d8Prothallus \[d8]Pro*thal"lus\, n.; pl. {Prothalli}. [NL., fr. Gr. [?] before + [?] a young shoot.] (Bot.) The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the o[94]phoric generation of ferns, etc. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
d8Prothallium \[d8]Pro*thal"li*um\, n.; pl. {Prothallia}. [NL.] (Bot.) Same as {Prothallus}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
d8Pro thyalosoma \[d8]Pro* thy`a*lo*so"ma\, n.; pl. {Prothyalosomata}. [NL., fr. Gr. prw^tos first + "y`alos glass + [?], [?], body.] (Biol.) The investing portion, or spherical envelope, surrounding the eccentric germinal spot of the germinal vesicle. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Prothyalosome \Pro*thy"a*lo*some\, n. (Biol.) Same as {Prothyalosoma}. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Protyle \Pro"tyle\, n. [Proto- + Gr. [?] stuff, material.] (Chem. & Astron.) The hypothetical homogeneous cosmic material of the original universe, supposed to have been differentiated into what are recognized as distinct chemical elements. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Proudling \Proud"ling\, n. A proud or haughty person. --Sylvester. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Proudly \Proud"ly\, adv. In a proud manner; with lofty airs or mien; haughtily; arrogantly; boastfully. Proudly he marches on, and void of fear. --Addison. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Pyretology \Pyr`e*tol"o*gy\, n. [Gr. [?] fever + -logy: cf. F. pyr[82]tologie.] (Med.) A discourse or treatise on fevers; the doctrine of fevers. --Hooper. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Pyridyl \Pyr"i*dyl\, n. [Pyridine + -yl.] (Chem.) A hypothetical radical, {C5H4N}, regarded as the essential residue of pyridine, and analogous to phenyl. | |
From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
Pyritology \Pyr`i*tol"o*gy\, n. [Gr. [?] of fire + -logy.] The science of blowpipe analysis. | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Partlow, VA Zip code(s): 22534 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Pirtleville, AZ (CDP, FIPS 56400) Location: 31.36165 N, 109.56693 W Population (1990): 1364 (452 housing units) Area: 5.1 sq km (land), 0.0 sq km (water) | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port Alexander, AK (city, FIPS 62510) Location: 56.21809 N, 134.63099 W Population (1990): 119 (64 housing units) Area: 8.6 sq km (land), 30.3 sq km (water) | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port Alice, AK (CDP, FIPS 62550) Location: 55.82649 N, 133.60283 W Population (1990): 30 (17 housing units) Area: 30.0 sq km (land), 17.1 sq km (water) | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port Allegany, PA (borough, FIPS 62088) Location: 41.81356 N, 78.27766 W Population (1990): 2391 (1023 housing units) Area: 4.7 sq km (land), 0.0 sq km (water) Zip code(s): 16743 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port Allen, LA (city, FIPS 61790) Location: 30.45075 N, 91.20877 W Population (1990): 6277 (2388 housing units) Area: 5.8 sq km (land), 1.4 sq km (water) Zip code(s): 70767 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port Alsworth, AK (CDP, FIPS 62620) Location: 60.20950 N, 154.30404 W Population (1990): 55 (28 housing units) Area: 54.5 sq km (land), 17.8 sq km (water) Zip code(s): 99653 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port La Belle, FL (CDP, FIPS 58420) Location: 26.75618 N, 81.40537 W Population (1990): 1512 (676 housing units) Area: 5.8 sq km (land), 0.0 sq km (water) | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port Lavaca, TX (city, FIPS 58916) Location: 28.61468 N, 96.62118 W Population (1990): 10886 (4319 housing units) Area: 16.6 sq km (land), 10.0 sq km (water) Zip code(s): 77979 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port Leyden, NY (village, FIPS 59454) Location: 43.58397 N, 75.34105 W Population (1990): 723 (303 housing units) Area: 1.6 sq km (land), 0.1 sq km (water) Zip code(s): 13433 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port Lions, AK (city, FIPS 63610) Location: 57.89076 N, 152.85891 W Population (1990): 222 (103 housing units) Area: 17.1 sq km (land), 7.2 sq km (water) | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port Ludlow, WA Zip code(s): 98365 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Port William, OH (village, FIPS 64360) Location: 39.55171 N, 83.78574 W Population (1990): 242 (97 housing units) Area: 0.3 sq km (land), 0.0 sq km (water) | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Portal, AZ Zip code(s): 85632 Portal, GA (town, FIPS 62216) Location: 32.53627 N, 81.93058 W Population (1990): 522 (229 housing units) Area: 4.5 sq km (land), 0.1 sq km (water) Zip code(s): 30450 Portal, ND (city, FIPS 63740) Location: 48.99561 N, 102.54787 W Population (1990): 192 (104 housing units) Area: 1.5 sq km (land), 0.0 sq km (water) Zip code(s): 58772 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Portales, NM (city, FIPS 59260) Location: 34.18109 N, 103.34531 W Population (1990): 10690 (4277 housing units) Area: 12.9 sq km (land), 0.0 sq km (water) Zip code(s): 88130 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Porthill, ID Zip code(s): 83853 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Portland, AR (city, FIPS 56750) Location: 33.23829 N, 91.51118 W Population (1990): 560 (226 housing units) Area: 2.8 sq km (land), 0.0 sq km (water) Zip code(s): 71663 Portland, CT (CDP, FIPS 61870) Location: 41.58400 N, 72.62478 W Population (1990): 5645 (2222 housing units) Area: 12.8 sq km (land), 1.3 sq km (water) Zip code(s): 06480 Portland, IN (city, FIPS 61236) Location: 40.43317 N, 84.98106 W Population (1990): 6483 (2850 housing units) Area: 8.3 sq km (land), 0.0 sq km (water) Zip code(s): 47371 Portland, ME (city, FIPS 60545) Location: 43.66713 N, 70.20717 W Population (1990): 64358 (31293 housing units) Area: 58.6 sq km (land), 104.8 sq km (water) Zip code(s): 04101, 04102, 04103 Portland, MI (city, FIPS 65860) Location: 42.87121 N, 84.90110 W Population (1990): 3889 (1479 housing units) Area: 6.2 sq km (land), 0.3 sq km (water) Zip code(s): 48875 Portland, MO Zip code(s): 65067 Portland, ND (city, FIPS 63900) Location: 47.49907 N, 97.36886 W Population (1990): 602 (268 housing units) Area: 2.2 sq km (land), 0.0 sq km (water) Zip code(s): 58274 Portland, NY Zip code(s): 14769 Portland, OH Zip code(s): 45770 Portland, OR (city, FIPS 59000) Location: 45.53825 N, 122.65650 W Population (1990): 437319 (198368 housing units) Area: 322.9 sq km (land), 25.0 sq km (water) Zip code(s): 97201, 97202, 97203, 97204, 97205, 97206, 97209, 97210, 97211, 97212, 97213, 97214, 97215, 97216, 97217, 97218, 97219, 97220, 97221, 97227, 97229, 97231, 97232, 97233, 97236, 97266 Portland, PA (borough, FIPS 62264) Location: 40.92053 N, 75.09812 W Population (1990): 516 (235 housing units) Area: 1.3 sq km (land), 0.1 sq km (water) Portland, TN (town, FIPS 60280) Location: 36.58593 N, 86.51658 W Population (1990): 5165 (2101 housing units) Area: 17.8 sq km (land), 0.0 sq km (water) Zip code(s): 37148 Portland, TX (city, FIPS 58904) Location: 27.87887 N, 97.32693 W Population (1990): 12224 (4566 housing units) Area: 15.2 sq km (land), 6.8 sq km (water) Zip code(s): 78374 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Portland Mills, PA Zip code(s): 15853 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Portlandville, NY Zip code(s): 13834 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Portola, CA (city, FIPS 58352) Location: 39.80487 N, 120.46764 W Population (1990): 2193 (1002 housing units) Area: 5.1 sq km (land), 0.0 sq km (water) Zip code(s): 96122 | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Portola Hills, CA (CDP, FIPS 58356) Location: 33.68365 N, 117.63199 W Population (1990): 2677 (970 housing units) Area: 4.7 sq km (land), 0.0 sq km (water) | |
From U.S. Gazetteer (1990) [gazetteer]: | |
Portola Valley, CA (town, FIPS 58380) Location: 37.37175 N, 122.21850 W Population (1990): 4194 (1675 housing units) Area: 23.7 sq km (land), 0.0 sq km (water) | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
Partial Differential Equation LANguage (PDELAN) ["An Extension of Fortran Containing Finite Difference Operators", J. Gary et al, Soft Prac & Exp 2(4) (Oct 1972)]. | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
partial equivalence relation (PER) A relation R on a set S where R is symmetric (x R y => y R x) and transitive (x R y R z => x R z) and where there may exist elements in S for which the relation is not defined. A PER is an equivalence relation on the subset for which it is defined, i.e. it is also reflexive (x R x). | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
partial evaluation technique where the {compiler} evaluates some subexpressions at {compile-time}. For example, pow x 0 = 1 pow x n = if even n then pxn2 * pxn2 else x * pow x (n-1) where pxn2 = pow x (n/2) f x = pow x 5 Since n is known we can specialise pow in its second argument and unfold the recursive calls: pow5 x = x * x4 where x4 = x2 * x2 x2 = x * x f x = pow5 x pow5 is known as the residual. We could now also unfold pow5 giving: f x = x * x4 where x4 = x2 * x2 x2 = x * x It is important that the partial evaluation algorithm should terminate. This is not guaranteed in the presence of recursive function definitions. For example, if partial evaluation were applied to the right hand side of the second clause for pow above, it would never terminate because the value of n is not known. Partial evaluation might change the termination properties of the program if, for example, the expression (x * 0) was reduced to 0 it would terminate even if x (and thus x * 0) did not. It may be necessary to reorder an expression to partially evaluate it, e.g. f x y = (x + y) + 1 g z = f 3 z If we rewrite f: f x y = (x + 1) + y then the expression x+1 becomes a constant for the function g and we can say g z = f 3 z = (3 + 1) + z = 4 + z Partial evaluation of {built-in functions} applied to constant arguments is known as {constant folding}. See also {full laziness}. (1999-05-25) | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
partial function A function which is not defined for all arguments of its input type. E.g. f(x) = 1/x if x /= 0. The opposite of a {total function}. In {denotational semantics}, a partial function f : D -> C may be represented as a total function ft : D' -> lift(C) where D' is a superset of D and ft x = f x if x in D ft x = bottom otherwise where lift(C) = C U {bottom}. Bottom ({LaTeX} {\perp}) denotes "undefined". (1995-02-03) | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
partial key information items (e.g. database "{records}"), and which could narrow the subset to one item if other partial key(s) were combined with it. (1997-04-26) | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
partial ordering A {relation} R is a partial ordering if it is a {pre-order} (i.e. it is {reflexive} (x R x) and {transitive} (x R y R z => x R z)) and it is also {antisymmetric} (x R y R x => x = y). The ordering is partial, rather than total, because there may exist elements x and y for which neither x R y nor y R x. In {domain theory}, if D is a set of values including the undefined value ({bottom}) then we can define a partial ordering relation <= on D by x <= y if x = bottom or x = y. The constructed set D x D contains the very undefined element, (bottom, bottom) and the not so undefined elements, (x, bottom) and (bottom, x). The partial ordering on D x D is then (x1,y1) <= (x2,y2) if x1 <= x2 and y1 <= y2. The partial ordering on D -> D is defined by f <= g if f(x) <= g(x) for all x in D. (No f x is more defined than g x.) A {lattice} is a partial ordering where all finite subsets have a {least upper bound} and a {greatest lower bound}. ("<=" is written in {LaTeX} as {\sqsubseteq}). (1995-02-03) | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
Partial Response Maximum Likelihood signal from the head of a {magnetic disk} drive into a digital signal. PRML attempts to correctly interpret even small changes in the analog signal, whereas {peak detection} relies on fixed thresholds. Because PRML can correctly decode a weaker signal it allows higher density recording. For example, PRML would read the magnetic flux density pattern 70, 60, 55, 60, 70 as binary "101", and the same for 45, 40, 30, 40, 45. A peak detector would decode everything above, say, 50 as high, and below 50 as low, so the first pattern would read "111" and the second as "000". (1996-12-27) | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
partially ordered set A {set} with a {partial ordering}. | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
Port Language ["Communicating Parallel Processes", J. Kerridge et al, Soft Prac & Exp 16(1):63-86 (Jan 1986)]. | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
PORTAL Process-Oriented Real-Time Algorithmic Language. ["PORTAL - A Pascal-based Real-Time Programming Language", R. Schild in Algorithmic Languages, J.W. deBakker et al eds, N-H 1981]. | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
portal to the {World-Wide Web}, typically offering a {search engine} and/or links to useful pages, and possibly news or other services. These services are usually provided for free in the hope that users will make the site their default {home page} or at least visit it often. Popular examples are {Yahoo} and {MSN}. Most portals on the {Internet} exist to generate advertising income for their owners, others may be focused on a specific group of users and may be part of an {intranet} or {extranet}. Some may just concentrate on one particular subject, say technology or medicine, and are known as a {vertical portals}. (2001-07-07) | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
PORTAL Process-Oriented Real-Time Algorithmic Language. ["PORTAL - A Pascal-based Real-Time Programming Language", R. Schild in Algorithmic Languages, J.W. deBakker et al eds, N-H 1981]. | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
portal to the {World-Wide Web}, typically offering a {search engine} and/or links to useful pages, and possibly news or other services. These services are usually provided for free in the hope that users will make the site their default {home page} or at least visit it often. Popular examples are {Yahoo} and {MSN}. Most portals on the {Internet} exist to generate advertising income for their owners, others may be focused on a specific group of users and may be part of an {intranet} or {extranet}. Some may just concentrate on one particular subject, say technology or medicine, and are known as a {vertical portals}. (2001-07-07) | |
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]: | |
ProTalk {Quintus}. An {object-oriented} {Prolog}. |