| ordovician | <geology> Of or pertaining to a division of the Silurian formation, corresponding in general to the Lower Silurian of most authors, exclusive of the Cambrian. The Ordovician formation. Origin: From L. Ordovices, a Celtic people in Wales. Source: Websters Dictionary (01 Mar 1998) |
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| ore | 1. The native form of a metal, whether free and uncombined, as gold, copper, etc, or combined, as iron, lead, etc. Usually the ores contain the metals combined with oxygen, sulphur, arsenic, etc. (called mineralizers). 2. <chemical> A native metal or its compound with the rock in which it occurs, after it has been picked over to throw out what is worthless. 3. Metal; as, the liquid ore. Ore hearth, a low furnace in which rich lead ore is reduced; also called Scotch hearth. Origin: AS. Ra; cf. Ar brass, bronze, akin to OHG. R, G. Ehern brazen, Icel. Eir brass, Goth. Ais, L. Aes, Skr. Ayas iron. 210. Cf. Ora, Era. Source: Websters Dictionary (01 Mar 1998) |
| oread | One of the nymphs of mountains and grottoes. "Like a wood nymph light, Oread or Dryad." (Milton) Origin: L. Oreas, -adis, Gr, fr. Mountain: cf. F. Oreade. Source: Websters Dictionary (01 Mar 1998) |
| oreades | <zoology> A group of butterflies which includes the satyrs. See Satyr. Source: Websters Dictionary (01 Mar 1998) |
| orectic | Pertaining to or characterised by orexia. (05 Mar 2000) |
| oregon grape | <botany> An evergreen species of barberry (Berberis Aquifolium), of Oregon and California; also, its roundish, blue-black berries. Source: Websters Dictionary (01 Mar 1998) |
| oreodon | <paleontology> A genus of extinct herbivorous mammals, abundant in the Tertiary formation of the Rocky Mountains. It is more or less related to the camel, hog, and deer. Origin: Gr, mountain +, tooth. Source: Websters Dictionary (01 Mar 1998) |
| oreodont | <paleontology> Resembling, or allied to, the genus Oreodon. Source: Websters Dictionary (01 Mar 1998) |
| oreographic | Of or pertaining to oreography. Source: Websters Dictionary (01 Mar 1998) |
| oreography | The science of mountains; orography. Origin: Gr, mountain. Source: Websters Dictionary (01 Mar 1998) |
| oreoselin | <chemistry> A white crystalline substance which is obtained indirectly from the root of an umbelliferous plant (Imperatoria Oreoselinum), and yields resorcin on decomposition. Source: Websters Dictionary (01 Mar 1998) |
| oreosoma | <zoology> A genus of small oceanic fishes, remarkable for the large conical tubercles which cover the under surface. Origin: NL, from Gr, mountain + body. Source: Websters Dictionary (01 Mar 1998) |
| orewood | Same as Oarweed. Source: Websters Dictionary (01 Mar 1998) |
| orexia | 1. The affective and conative aspects of an act, in contrast to the cognitive aspect. Synonym: appetite. Origin: G. Orexis, appetite (05 Mar 2000) |
| orexigenic | Appetite-stimulating. (05 Mar 2000) |
Synonyms : 2, 5-Diaminopentanoic Acid, Ornithine Dihydrochloride, (L)-Isomer, Ornithine Hydrochloride, (D)-Isomer, Ornithine Hydrochloride, (DL)-Isomer, Ornithine Hydrochloride, (L)-Isomer, Ornithine Monoacetate, (L)-Isomer, Ornithine Monohydrobromide, (L)-Isomer
Synonyms : Ornithine Carbamylphosphate Transferase, Carbamoyltransferase, Ornithine, Carbamylphosphate Transferase, Ornithine, Transcarbamylase, Ornithine, Transferase, Ornithine Carbamylphosphate
Synonyms : Deficiency Disease, Ornithine Carbamoyltransferase, Deficiency Disease, Ornithine Transcarbamylase
Synonyms : Carboxy-lyase, Ornithine, Decarboxylase, Ornithine, Ornithine Carboxy lyase
Synonyms : L-Ornithine-2-Oxo-Acid Aminotransferase, L-Ornithine-2-Oxoglutarate Aminotransferase, Ornithine Ketoacid Aminotransferase, Ornithine-2-Ketoglutarate Aminotransferase, Ornithine-Keto-Acid-Transaminase, Ornithine-Ketoacid-Transaminase, Transaminase, Ornithine
| orthodonture |
orthodontics: the branch of dentistry dealing with the prevention or correction of irregularities of the teeth
출처: wordnet.princeton.edu/perl/webwn
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| orthodox sleep |
a recurring sleep state during which rapid eye movements do not occur and dreaming does not occur; accounts for about 75% of normal sleep time
출처: wordnet.princeton.edu/perl/webwn
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| orthopaedics |
orthopedics: the branch of medical science concerned with disorders or deformities of the spine and joints
출처: wordnet.princeton.edu/perl/webwn
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| orthopaedist |
orthopedist: a specialist in correcting deformities of the skeletal system (especially in children)
출처: wordnet.princeton.edu/perl/webwn
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| orthophosphoric acid |
phosphoric acid: an acid used in fertilizers and soaps: H3PO4
출처: wordnet.princeton.edu/perl/webwn
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| OR | putting in order |
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| OR | (architecture) one of the three styles of Greek architecture (or a style developed from the original three by the Romans) |
| OR | a degree in a continuum of size or quantity |
| OR | a commercial document used to request someone to supply something in return for payment |
| OR | a legally binding command or decision entered on the court record (as if issued by a court or judge) |
| OR | a body of rules followed by an assembly |
| OR | (often plural) a command given by a superior (e.g., a military or law enforcement officer) that must be obeyed |
| OR | a request for food or refreshment (as served in a restaurant or bar etc.) |
| OR | (biology) taxonomic group containing one or more families |
| OR | a formal association of people with similar interests |
| OR | logical or comprehensible arrangement of separate elements |
| OR | established customary state (especially of society) |