Ordovician
         n 1: from 500 million to 425 million years ago; conodonts and
               ostracods and algae and seaweeds [syn: {Ordovician},
               {Ordovician period}]

English Dictionary: Orthophosphate's	by the DICT Development Group
From WordNet (r) 3.0 (2006) [wn]:
Ordovician period n from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds Synonym(s): Ordovician, Ordovician period
From WordNet (r) 3.0 (2006) [wn]:
orthoboric acid n a white or colorless slightly acid solid that is soluble in water and ethanol; used in the manufacture of glass and paper and adhesives and in detergents and as a flux in welding; also used as an antiseptic and food preservative Synonym(s): boric acid, orthoboric acid
From WordNet (r) 3.0 (2006) [wn]:
orthoepist n a practitioner of orthoepy (especially one of the 17th or 18th century scholars who proposed to reform English spelling so it would reflect pronunciation more closely)
From WordNet (r) 3.0 (2006) [wn]:
orthoepy n the way a word or a language is customarily spoken; "the pronunciation of Chinese is difficult for foreigners"; "that is the correct pronunciation" Synonym(s): pronunciation, orthoepy a term formerly used for the part of phonology that dealt with the `correct' pronunciation of words and its relation to `correct' orthography
From WordNet (r) 3.0 (2006) [wn]:
orthopaedic adj of or relating to orthopedics; "orthopedic shoes" [syn: orthopedic, orthopaedic, orthopedical]
From WordNet (r) 3.0 (2006) [wn]:
orthopaedics n the branch of medical science concerned with disorders or deformities of the spine and joints Synonym(s): orthopedics, orthopaedics
From WordNet (r) 3.0 (2006) [wn]:
orthopaedist n a specialist in correcting deformities of the skeletal system (especially in children) Synonym(s): orthopedist, orthopaedist
From WordNet (r) 3.0 (2006) [wn]:
orthopedic adj of or relating to orthopedics; "orthopedic shoes" [syn: orthopedic, orthopaedic, orthopedical]
From WordNet (r) 3.0 (2006) [wn]:
orthopedical adj of or relating to orthopedics; "orthopedic shoes" [syn: orthopedic, orthopaedic, orthopedical]
From WordNet (r) 3.0 (2006) [wn]:
orthopedics n the branch of medical science concerned with disorders or deformities of the spine and joints Synonym(s): orthopedics, orthopaedics
From WordNet (r) 3.0 (2006) [wn]:
orthopedist n a specialist in correcting deformities of the skeletal system (especially in children) Synonym(s): orthopedist, orthopaedist
From WordNet (r) 3.0 (2006) [wn]:
orthophosphate n a salt of phosphoric acid [syn: phosphate, orthophosphate, inorganic phosphate]
From WordNet (r) 3.0 (2006) [wn]:
orthophosphoric acid n an acid used in fertilizers and soaps: H3PO4 [syn: phosphoric acid, orthophosphoric acid]
From WordNet (r) 3.0 (2006) [wn]:
orthophosphorous acid n a clear or yellow monobasic acid (H3PO2) [syn: hypophosphorous acid, phosphorous acid, orthophosphorous acid]
From WordNet (r) 3.0 (2006) [wn]:
orthopnea n form of dyspnea in which the person can breathe comfortably only when standing or sitting erect; associated with asthma and emphysema and angina pectoris
From WordNet (r) 3.0 (2006) [wn]:
Orthopristis n a genus of Haemulidae [syn: Orthopristis, {genus Orthopristis}]
From WordNet (r) 3.0 (2006) [wn]:
Orthopristis chrysopterus n found from Long Island southward [syn: pigfish, hogfish, Orthopristis chrysopterus]
From WordNet (r) 3.0 (2006) [wn]:
orthopter n heavier-than-air craft that is propelled by the flapping of wings Synonym(s): orthopter, ornithopter
From WordNet (r) 3.0 (2006) [wn]:
Orthoptera n grasshoppers and locusts; crickets [syn: Orthoptera, order Orthoptera]
From WordNet (r) 3.0 (2006) [wn]:
orthopteran n any of various insects having leathery forewings and membranous hind wings and chewing mouthparts Synonym(s): orthopterous insect, orthopteron, orthopteran
From WordNet (r) 3.0 (2006) [wn]:
orthopteron n any of various insects having leathery forewings and membranous hind wings and chewing mouthparts Synonym(s): orthopterous insect, orthopteron, orthopteran
From WordNet (r) 3.0 (2006) [wn]:
orthopterous insect n any of various insects having leathery forewings and membranous hind wings and chewing mouthparts Synonym(s): orthopterous insect, orthopteron, orthopteran
From WordNet (r) 3.0 (2006) [wn]:
orthoptic adj of or relating to normal binocular vision
From WordNet (r) 3.0 (2006) [wn]:
orthoptics n treatment of defects of binocular vision (such as strabismus and amblyopia) by nonsurgical measures (especially by exercises to strengthen the eye muscles)
From WordNet (r) 3.0 (2006) [wn]:
orthoptist n a specialist in orthoptics
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ordovian \Or*do"vi*an\, a. & n. (Geol.)       Ordovician.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ordovician \Or`do*vi"cian\, a. [From L. Ordovices, a Celtic       people in Wales.] (Geol.)       Of or pertaining to a division of the Silurian formation,       corresponding in general to the Lower Silurian of most       authors, exclusive of the Cambrian. -- n. The Ordovician       formation.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Sweetwood \Sweet"wood`\, n. (Bot.)       (a) The true laurel ({Laurus nobilis}.)       (b) The timber of the tree {Oreodaphne Leucoxylon}, growing             in Jamaica. The name is also applied to the timber of             several other related trees.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ortho89pic \Or`tho*[89]p"ic\, Ortho89pical \Or`tho*[89]p"ic*al\,       a.       Of or pertaining to ortho[89]py, or correct pronunciation. --       {Or`tho*[89]p"ic*al*ly}, adv.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ortho89pic \Or`tho*[89]p"ic\, Ortho89pical \Or`tho*[89]p"ic*al\,       a.       Of or pertaining to ortho[89]py, or correct pronunciation. --       {Or`tho*[89]p"ic*al*ly}, adv.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ortho89pic \Or`tho*[89]p"ic\, Ortho89pical \Or`tho*[89]p"ic*al\,       a.       Of or pertaining to ortho[89]py, or correct pronunciation. --       {Or`tho*[89]p"ic*al*ly}, adv.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ortho89pist \Or"tho*[89]*pist\, n.       One who is skilled in ortho[89]py.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ortho89py \Or"tho*[89]*py\, n. [Gr. [?]; 'orqo`s right + [?] a       word: cf. F. ortho[82]pie. See {Ortho-}, and {Epic}.]       The art of uttering words correctly; a correct pronunciation       of words; also, mode of pronunciation.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Orthopedic \Or`tho*ped"ic\, Orthopedical \Or`tho*ped"ic*al\, a.       (Med.)       Pertaining to, or employed in, orthopedy; relating to the       prevention or cure of deformities of children, or, in       general, of the human body at any age; as, orthopedic       surgery; an orthopedic hospital.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Orthopedic \Or`tho*ped"ic\, Orthopedical \Or`tho*ped"ic*al\, a.       (Med.)       Pertaining to, or employed in, orthopedy; relating to the       prevention or cure of deformities of children, or, in       general, of the human body at any age; as, orthopedic       surgery; an orthopedic hospital.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Orthopedist \Or*thop"e*dist\, n. (Med.)       One who prevents, cures, or remedies deformities, esp. in       children.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Orthopedy \Or*thop"e*dy\, n. [Ortho- + Gr. [?], [?], a child.]       (Med.)       The art or practice of curing the deformities of children,       or, by extension, any deformities of the human body.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Orthophony \Or*thoph"o*ny\, n. [Ortho- + Gr. [?] voice.]       The art of correct articulation; voice training.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Orthopinacoid \Or`tho*pin"a*coid\, n. [Ortho- + pinacoid.]       (Crystallog.)       A name given to the two planes in the monoclinic system which       are parallel to the vertical and orthodiagonal axes.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
d8Orthopnoea \[d8]Or`thop*n[oe]"a\, Orthopny \Or*thop"ny\, n.       [L. orthopnoea, Gr. [?]; 'orqo`sstraight, right + pnei^n to       breathe: cf. F. orthopn[82]e.] (Med.)       Specifically, a morbid condition in which respiration can be       performed only in an erect posture; by extension, any       difficulty of breathing.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Orthopraxy \Or"tho*prax`y\, n. [Gr. 'orqo`s straight + [?] a       doing.] (Med.)       The treatment of deformities in the human body by mechanical       appliances.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Sailor \Sail"or\, n.       One who follows the business of navigating ships or other       vessels; one who understands the practical management of       ships; one of the crew of a vessel; a mariner; a common       seaman.          Syn: Mariner; seaman; seafarer.          {Sailor's choice}. (Zo[94]l.)       (a) An excellent marine food fish ({Diplodus, [or] Lagodon,             rhomboides}) of the Southern United States; -- called             also {porgy}, {squirrel fish}, {yellowtail}, and             {salt-water bream}.       (b) A species of grunt ({Orthopristis, [or] Pomadasys,             chrysopterus}), an excellent food fish common on the             southern coasts of the United States; -- called also             {hogfish}, and {pigfish}.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
d8Insecta \[d8]In*sec"ta\, n. pl. [NL. See {Insect}.]       1. (Zo[94]l.) One of the classes of Arthropoda, including             those that have one pair of antenn[91], three pairs of             mouth organs, and breathe air by means of trache[91],             opening by spiracles along the sides of the body. In this             sense it includes the Hexapoda, or six-legged insects and             the Myriapoda, with numerous legs. See {Insect}, n.          2. (Zo[94]l.) In a more restricted sense, the Hexapoda alone.             See {Hexapoda}.          3. (Zo[94]l.) In the most general sense, the Hexapoda,             Myriapoda, and Arachnoidea, combined.          Note: The typical Insecta, or hexapod insects, are divided                into several orders, viz.: {Hymenoptera}, as the bees                and ants; {Diptera}, as the common flies and gnats;                {Aphaniptera}, or fleas; {Lepidoptera}, or moths and                butterflies; {Neuroptera}, as the ant-lions and                hellgamite; {Coleoptera}, or beetles; {Hemiptera}, as                bugs, lice, aphids; {Orthoptera}, as grasshoppers and                cockroaches; {Pseudoneuroptera}, as the dragon flies                and termites; {Euplexoptera}, or earwings; {Thysanura},                as the springtails, podura, and lepisma. See these                words in the Vocabulary.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Orthopteran \Or*thop"ter*an\, n. (Zo[94]l.)       One of the Orthoptera.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Orthopterous \Or*thop"ter*ous\, a. (Zo[94]l.)       Of or pertaining to the Orthoptera.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ortive \Or"tive\, a. [L. ortivus, fr. oriri, ortus, to rise: cf.       F. ortive.]       Of or relating to the time or act of rising; eastern; as, the       ortive amplitude of a planet.