| ox | <zoology> The male of bovine quadrupeds, especially the domestic animal when castrated and grown to its full size, or nearly so. The word is also applied, as a general name, to any species of bovine animals, male and female. "All sheep and oxen, yea, and the beasts of the field." (Ps. Viii. 7) The castrated male is called a steer until it attains its full growth, and then, an ox; but if castrated somewhat late in life, it is called a stag. The male, not castrated, is called a bull. These distinctions are well established in regard to domestic animals of this genus. When wild animals of this kind are spoken of, ox is often applied both to the male and the female. The name ox is never applied to the individual cow, or female, of the domestic kind. Oxen may comprehend both the male and the female. <marine biology> Grunting ox, a very large ray (Dicerobatis Giornae) of Southern Europe. It has a hornlike organ projecting forward from each pectoral fin. It sometimes becomes twenty feet long and twenty-eight feet broad, and weighs over a ton. Called also sea devil. To have the black ox tread on one's foot, to be unfortunate; to know what sorrow is (because black oxen were sacrificed to Pluto). Origin: AS. Oxa; akin to D. Os. G. Ochs, ochse, OHG. Ohso, Icel. Oxi, Sw. & Dan. Oxe, Goth. Aohsa, Skr. Ukshan ox, bull; cf. Skr. Uksh to sprinkle. Cf. Humid, Aurochs. Source: Websters Dictionary (01 Mar 1998) |
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| ox bots | Cattle grub, the larvae of the warble flies, Hypoderma bovis and H. Lineatum. (05 Mar 2000) |
| ox heart | <anatomy, cardiology, pathology> A very large heart usually due to chronic hypertension or, more often to aortic valve disease. Synonym: bucardia, cor bovinum. (05 Mar 2000) |
| oxa- | Combining form inserted in names of organic compounds to signify the presence or addition of oxygen atom(s) in a chain or ring (as in ethers), not appended to either (as in ketones and aldehydes). See: hydroxy-, oxo-, oxy-. Origin: English. Oxygen (05 Mar 2000) |
| oxacid | <chemistry> See Oxyacid. Source: Websters Dictionary (01 Mar 1998) |
| oxacillin | <chemical> A semisynthetic penicillanase-resistant penicillin, used primarily in the treatment of infections to penicillinase-resistant staphylococci. Pharmacological action: penicillins. Chemical name: 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-6-(((5-methyl-3-phenyl-4-isoxazolyl)carbonyl)amino)-7-oxo-, (2S-(2alpha,5alpha,6beta))- (12 Dec 1998) |
| oxacillin sodium | 5-Methyl-3-phenyl-4-isoxazolylpenicillin sodium;a semisynthetic penicillin used in the oral therapy of penicillin-resistant staphylococcal infections. (05 Mar 2000) |
| oxalaemia | The presence of an abnormally large amount of oxalates in the blood. Origin: oxalate + G. Haima, blood (05 Mar 2000) |
| oxalaldehyde | <chemistry> A white, amorphous, deliquescent powder, (CO.H)2, obtained by the partial oxidation of glycol. It is a double aldehyde, between glycol and oxalic acid. Origin: Glycol + oxalic + aldehyde. Source: Websters Dictionary (01 Mar 1998) |
| oxalan | <chemistry> A complex nitrogenous substance C3N3H5O3 obtained from alloxan (or when urea is fused with ethyl oxamate), as a stable white crystalline powder. Synonym: oxaluramide. Origin: From Alloxan, by transposition of letters. Source: Websters Dictionary (01 Mar 1998) |
| oxalantin | <chemistry> A white crystalline nitrogenous substance (C6H4N4O5) obtained by the reduction of parabanic acid. Synonym: leucoturic acid. Origin: From Alloxantin, by transposition of letters. Source: Websters Dictionary (01 Mar 1998) |
| oxalate | A salt of oxalic acid, salts of oxalic acid are found in kidney stones in those with primary hyperoxaluria or oxalosis. (27 Sep 1997) |
| oxalate calculus | A hard urinary calculus of calcium oxalate; some are covered with minute sharp spines that can abrade the renal pelvic epithelium, whereas others are smooth. (05 Mar 2000) |
| oxalates | Ethanedioic acids. Salts of oxalic acid. The acid occurs in many plants and vegetables and is produced in the body by metabolism of glyoxylic acid or ascorbic acid. Ingestion of a diet rich in oxalates or the existence of primary hyperoxaluria (a genetic disorder of glycine metabolism) may lead to the formation of calcium oxalate kidney calculi. (12 Dec 1998) |
| oxaldehyde | <chemistry> Same as Glyoxal. Origin: Oxalic + aldehyde. Source: Websters Dictionary (01 Mar 1998) |