| ocean-type fish | An anadromous fish that shows no indication on its scales or other hard parts of an extended freshwater residence early in its life. (09 Oct 1997) |
|---|---|
| oceanography | A description of the ocean. Origin: Ocean. Source: Websters Dictionary (01 Mar 1998) |
| oceanology | <study> That branch of science which relates to the ocean. Origin: Ocean. Source: Websters Dictionary (01 Mar 1998) |
| Oceanospirillum | A genus of motile, nonsporeforming, aerobic bacteria (family Spirillaceae) containing Gram-negative, rigid, helical cells which are 0.3 to 1.2 um in diameter. Motile cells contain bipolar fascicles of flagella. There is no growth anaerobically with nitrate. These organisms are chemoorganotrophic and possess a strictly respiratory metabolism; they neither oxidise nor ferment carbohydrates; found in marine environments. There are at present five species in this genus, of which the type species is Oceanospirillum linum. Origin: L. Oceanus, ocean, + spirillum, coil (05 Mar 2000) |
| oceanus | The god of the great outer sea, or the river which was believed to flow around the whole earth. Origin: L, from Gr. Source: Websters Dictionary (01 Mar 1998) |
| ocellated | 1. Resembling an eye. 2. Marked with eyelike spots of colour; as, the ocellated blenny. <zoology> Ocellated turkey, the wild turkey of Central America (Meleagris ocellata). Origin: L.ocellatus, fr. Ocellus a little eye, dim. Of oculus an eye. Source: Websters Dictionary (01 Mar 1998) |
| ocellus | Origin: L, dim. Of oculus an eye. <zoology> A little eye; a minute simple eye found in many invertebrates. An eyelike spot of colour, as those on the tail of the peacock. Source: Websters Dictionary (01 Mar 1998) |
| oceloid | <zoology> Resembling the ocelot. Origin: Ocelot. Source: Websters Dictionary (01 Mar 1998) |
| ocelot | <zoology> An American feline carnivore (Felis pardalis). It ranges from the Southwestern United States to Patagonia. It is covered with blackish ocellated spots and blotches, which are variously arranged. The ground colour varies from reddish gray to tawny yellow. Origin: Mexican ocelotl. Source: Websters Dictionary (01 Mar 1998) |
| ochlesis | <medicine> A general morbid condition induced by the crowding together of many persons, especially. Sick persons, under one roof. Origin: NL, fr. Gr. Disturbance, fr. Crowd, mob. Source: Websters Dictionary (01 Mar 1998) |
| ochlophobia | <psychology> Morbid fear of crowds. Origin: G. Ochlos, a crowd, + phobos, fear (05 Mar 2000) |
| Ochoa | Severo, Spanish-U.S. Biochemist and Nobel laureate, *1905. See: Ochoa's law. (05 Mar 2000) |
| Ochoa's law | The content of the X-chromosome tends to be phylogenetically conserved. (05 Mar 2000) |
| ochratoxin A hydroxylase | <enzyme> Catalyzed by the cytochrome p450ia1 isoenzyme Registry number: EC 1.14.99.- Synonym: ochratoxin 4-hydroxylase (26 Jun 1999) |
| ochratoxins | Toxins produced by aspergillus ochraceus. Occurring widely, ochratoxins have been found as natural contaminants on storage grains, corn, peanuts, cottonseed, and decaying vegetation. They are produced by several other species of aspergillus as well as by penicillium viridicatum. (12 Dec 1998) |