CH4 : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: CH4	by the DICT Development Group
5 results for CH4
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Methane \Meth"ane\, n. [See {Methal}.] (Chem.) A light, colorless, gaseous, inflammable hydrocarbon, {CH4}; marsh gas. See {Marsh gas}, under {Gas}. {Methane series} (Chem.), a series of saturated hydrocarbons, of which methane is the first member and type, and (because of their general chemical inertness and indifference) called also the {paraffin (little affinity) series}. The lightest members are gases, as methane, ethane; intermediate members are liquids, as hexane, heptane, etc. (found in benzine, kerosene, etc.); while the highest members are white, waxy, or fatty solids, as paraffin proper.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Type \Type\, n. [F. type; cf. It. tipo, from L. typus a figure, image, a form, type, character, Gr. [?] the mark of a blow, impression, form of character, model, from the root of [?] to beat, strike; cf. Skr. tup to hurt.] 1. The mark or impression of something; stamp; impressed sign; emblem. The faith they have in tennis, and tall stockings, Short blistered breeches, and those types of travel. --Shak. 2. Form or character impressed; style; semblance. Thy father bears the type of king of Naples. --Shak. 3. A figure or representation of something to come; a token; a sign; a symbol; -- correlative to antitype. A type is no longer a type when the thing typified comes to be actually exhibited. --South. 4. That which possesses or exemplifies characteristic qualities; the representative. Specifically: (a) (Biol.) A general form or structure common to a number of individuals; hence, the ideal representation of a species, genus, or other group, combining the essential characteristics; an animal or plant possessing or exemplifying the essential characteristics of a species, genus, or other group. Also, a group or division of animals having a certain typical or characteristic structure of body maintained within the group. Since the time of Cuvier and Baer . . . the whole animal kingdom has been universally held to be divisible into a small number of main divisions or types. --Haeckel. (b) (Fine Arts) The original object, or class of objects, scene, face, or conception, which becomes the subject of a copy; esp., the design on the face of a medal or a coin. (c) (Chem.) A simple compound, used as a mode or pattern to which other compounds are conveniently regarded as being related, and from which they may be actually or theoretically derived. Note: The fundamental types used to express the simplest and most essential chemical relations are hydrochloric acid, {HCl}; water, {H2O}; ammonia, {NH3}; and methane, {CH4}. 5. (Typog.) (a) A raised letter, figure, accent, or other character, cast in metal or cut in wood, used in printing. (b) Such letters or characters, in general, or the whole quantity of them used in printing, spoken of collectively; any number or mass of such letters or characters, however disposed. Note: Type are mostly made by casting type metal in a mold, though some of the larger sizes are made from maple, mahogany, or boxwood. In the cut, a is the body; b, the face, or part from which the impression is taken; c, the shoulder, or top of the body; d, the nick (sometimes two or more are made), designed to assist the compositor in distinguishing the bottom of the face from the top; e, the groove made in the process of finishing, -- each type as cast having attached to the bottom of the body a jet, or small piece of metal (formed by the surplus metal poured into the mold), which, when broken off, leaves a roughness that requires to be removed. The fine lines at the top and bottom of a letter are technically called ceriphs, and when part of the face projects over the body, as in the letter f, the projection is called a kern. The type which compose an ordinary book font consist of Roman CAPITALS, small capitals, and lower-case letters, and Italic CAPITALS and lower-case letters, with accompanying figures, points, and reference marks, -- in all about two hundred characters. Including the various modern styles of fancy type, some three or four hundred varieties of face are made. Besides the ordinary Roman and Italic, some of the most important of the varieties are -- Old English. Black Letter. Old Style. French Elzevir. Boldface. Antique. Clarendon. Gothic. Typewriter. Script. The smallest body in common use is diamond; then follow in order of size, pearl, agate, nonpareil, minion, brevier, bourgeois (or two-line diamond), long primer (or two-line pearl), small pica (or two-line agate), pica (or two-line nonpareil), English (or two-line minion), Columbian (or two-line brevier), great primer (two-line bourgeois), paragon (or two-line long primer), double small pica (or two-line small pica), double pica (or two-line pica), double English (or two-line English), double great primer (or two-line great primer), double paragon (or two-line paragon), canon (or two-line double pica). Above this, the sizes are called five-line pica, six-line pica, seven-line pica, and so on, being made mostly of wood. The following alphabets show the different sizes up to great primer. Brilliant . . abcdefghijklmnopqrstuvwxyz
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Carbureted \Car"bu*ret`ed\, a. 1. (Chem.) Combined with carbon in the manner of a carburet or carbide. 2. Saturated or impregnated with some volatile carbon compound; as, water gas is carbureted to increase its illuminating power. [Written also {carburetted}.] {Carbureted hydrogen gas}, any one of several gaseous compounds of carbon and hydrogen, some of with make up illuminating gas. {Light carbureted hydrogen}, marsh gas, {CH4}; fire damp
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
{Gas fitter}, one who lays pipes and puts up fixtures for gas. {Gas fitting}. (a) The occupation of a gas fitter. (b) pl. The appliances needed for the introduction of gas into a building, as meters, pipes, burners, etc. {Gas fixture}, a device for conveying illuminating or combustible gas from the pipe to the gas-burner, consisting of an appendage of cast, wrought, or drawn metal, with tubes upon which the burners, keys, etc., are adjusted. {Gas generator}, an apparatus in which gas is evolved; as: (a) a retort in which volatile hydrocarbons are evolved by heat; (b) a machine in which air is saturated with the vapor of liquid hydrocarbon; a carburetor; (c) a machine for the production of carbonic acid gas, for a[89]rating water, bread, etc. --Knight. {Gas jet}, a flame of illuminating gas. {Gas machine}, an apparatus for carbureting air for use as illuminating gas. {Gas meter}, an instrument for recording the quantity of gas consumed in a given time, at a particular place. {Gas retort}, a retort which contains the coal and other materials, and in which the gas is generated, in the manufacture of gas. {Gas stove}, a stove for cooking or other purposes, heated by gas. {Gas tar}, coal tar. {Gas trap}, a drain trap; a sewer trap. See 4th {Trap}, 5. {Gas washer} (Gas Works), an apparatus within which gas from the condenser is brought in contact with a falling stream of water, to precipitate the tar remaining in it. --Knight. {Gas water}, water through which gas has been passed for purification; -- called also {gas liquor} and {ammoniacal water}, and used for the manufacture of sal ammoniac, carbonate of ammonia, and Prussian blue. --Tomlinson. {Gas well}, a deep boring, from which natural gas is discharged. --Raymond. {Gas works}, a manufactory of gas, with all the machinery and appurtenances; a place where gas is generated for lighting cities. {Laughing gas}. See under {Laughing}. {Marsh gas} (Chem.), a light, combustible, gaseous hydrocarbon, {CH4}, produced artificially by the dry distillation of many organic substances, and occurring as a natural product of decomposition in stagnant pools, whence its name. It is an abundant ingredient of ordinary illuminating gas, and is the first member of the paraffin series. Called also {methane}, and in coal mines, {fire damp}. {Natural gas}, gas obtained from wells, etc., in Pennsylvania, Ohio, and elsewhere, and largely used for fuel and illuminating purposes. It is chiefly derived from the Coal Measures. {Olefiant gas} (Chem.). See {Ethylene}. {Water gas} (Chem.), a kind of gas made by forcing steam over glowing coals, whereby there results a mixture of hydrogen and carbon monoxide. This gives a gas of intense heating power, but destitute of light-giving properties, and which is charged by passing through some volatile hydrocarbon, as gasoline.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Homology \Homol"ogy\, n. [Gr. [?] agreement. See {Homologous}.] 1. The quality of being homologous; correspondence; relation; as, the homologyof similar polygons. 2. (Biol.) Correspondence or relation in type of structure in contradistinction to similarity of function; as, the relation in structure between the leg and arm of a man; or that between the arm of a man, the fore leg of a horse, the wing of a bird, and the fin of a fish, all these organs being modifications of one type of structure. Note: Homology indicates genetic relationship, and according to Haeckel special homology should be defined in terms of identity of embryonic origin. See {Homotypy}, and {Homogeny}. 3. (Chem.) The correspondence or resemblance of substances belonging to the same type or series; a similarity of composition varying by a small, regular difference, and usually attended by a regular variation in physical properties; as, there is an homology between methane, {CH4}, ethane, {C2H6}, propane, {C3H8}, etc., all members of the paraffin series. In an extended sense, the term is applied to the relation between chemical elements of the same group; as, chlorine, bromine, and iodine are said to be in homology with each other. Cf. {Heterology}. {General homology} (Biol.), the higher relation which a series of parts, or a single part, bears to the fundamental or general type on which the group is constituted. --Owen. {Serial homology} (Biol.), representative or repetitive relation in the segments of the same organism, -- as in the lobster, where the parts follow each other in a straight line or series. --Owen. See {Homotypy}. {Special homology} (Biol.), the correspondence of a part or organ with those of a different animal, as determined by relative position and connection. --Owen.