| ouabagenin | The aglycon obtained from the hydrolysis of the cardiac glycoside, ouabain; exerts cardiotonic activity. (05 Mar 2000) |
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| ouabain | <drug> A plant alkaloid from Strophantus gratus, that specifically binds to and inhibits the sodium potassium ATPase. Related to digitalis. (18 Nov 1997) |
| ouakari | <zoology> Any South American monkey of the genus Brachyurus, especially B. Ouakari. Origin: From the native name. Source: Websters Dictionary (01 Mar 1998) |
| ouanderoo | <zoology> The wanderoo. Source: Websters Dictionary (01 Mar 1998) |
| ouarine | <zoology> A Brazilian monkey of the genus Mycetes. Origin: F. Source: Websters Dictionary (01 Mar 1998) |
| Ouchterlony | Orjan, Swedish bacteriologist, *1914. See: Ouchterlony method, Ouchterlony technique, Ouchterlony test, Ouchterlony technique. (05 Mar 2000) |
| Ouchterlony assay | <investigation> Immunological test for antigen antibody reactions in which diffusion of soluble antigen and antibody in a gel leads to precipitation of an antigen-antibody complex, visible usually as a whitish band. The system has the advantage that, because of radial diffusion of the reagents, a very wide range of ratios of antigen to antibody concentration develop, thus it is likely that precipitation will occur somewhere in the gel even when no care is taken with quantitation of the system. (18 Nov 1997) |
| Ouchterlony method | Double (gel) diffusion test in two dimensions. See: gel diffusion precipitin tests in two dimensions. Synonym: Ouchterlony method. (05 Mar 2000) |
| Ouchterlony technique | A technique in which both reaction partners (antigen and antibody) are allowed to diffuse to each other in a gel in a precipitation reaction. (05 Mar 2000) |
| Ouchterlony test | Double (gel) diffusion test in two dimensions. See: gel diffusion precipitin tests in two dimensions. Synonym: Ouchterlony method. (05 Mar 2000) |
| ouistiti | <zoology> See Wistit. Origin: F. Source: Websters Dictionary (01 Mar 1998) |
| oul- | For words beginning thus, see ulo-. (05 Mar 2000) |
| oulachan | <zoology> Same as Eulachon. Source: Websters Dictionary (01 Mar 1998) |
| ounce | 1. A weight, the sixteenth part of a pound avoirdupois, and containing 437 grains. 2. The twelfth part of a troy pound. The troy ounce contains twenty pennyweights, each of twenty-four grains, or, in all, 480 grains, and is the twelfth part of the troy pound. The troy ounce is also a weight in apothecaries' weight. [Troy ounce is sometimes written as one word, troyounce. 3. A small portion; a bit. "By ounces hung his locks that he had." (Chaucer) Fluid ounce. See Fluid. Origin: F. Once, fr. L. Uncia a twelfth, the twelfth part of a pound or of a foot: cf. Gr. Bulk, mass, atom. Cf. 2d Inch, Oke. <zoology> A feline quadruped (Felis irbis, or uncia) resembling the leopard in size, and somewhat in colour, but it has longer and thicker fur, which forms a short mane on the back. The ounce is pale yellowish gray, with irregular dark spots on the neck and limbs, and dark rings on the body. It inhabits the lofty mountain ranges of Asia. Called also once. Origin: F. Once; cf. It. Lonza, Sp. Onza; prob. For lonce, taken as l'once, fr. L. Lynx, Gr, or an (assumed) fem. Adj. Lyncea, from lynx. Cf. Lynx. Source: Websters Dictionary (01 Mar 1998) |
| ouphen | Of or relating to the elves; elflike; implike; weird; scarcely human; mischievous, as though caused by elves. "Elfish light." "The elfish intelligence that was so familiar an expression on her small physiognomy." (Hawthorne) Source: Websters Dictionary (01 Mar 1998) |