| ookinete | The motile zygote of the malarial organism that penetrates the mosquito stomach to form an oocyst under the outer gut lining; the contents of the oocyst subsequently divide to produce numerous sporozoites. Synonym: vermicule. Origin: G. Oon, egg, + kinetos, motile (05 Mar 2000) |
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| oolemma | Plasma membrane of the oocyte. Origin: G. Oon, egg, + lemma, sheath (05 Mar 2000) |
| oolite | <geology> A variety of limestone, consisting of small round grains, resembling the roe of a fish. It sometimes constitutes extensive beds, as in the European Jurassic. Origin: Gr. An egg: cf.F. Oolithe. So named from its resemblance to the roe of fish. Source: Websters Dictionary (01 Mar 1998) |
| oological | <zoology> Of or pertaining to oology. Source: Websters Dictionary (01 Mar 1998) |
| oologist | One versed in oology. Source: Websters Dictionary (01 Mar 1998) |
| oology | <study> The science of eggs in relation to their colouring, size, shape, and number. Source: Websters Dictionary (01 Mar 1998) |
| oomycetes | Group of fungi in which the mycelium is nonseptate, i.e. Lacks cross walls and the nuclei are diploid. Sexual reproduction is oogamous. (18 Nov 1997) |
| oomycosis | A mycosis caused by fungi belonging to the class Oomycetes; e.g., rhinosporidiosis, pythiosis. (05 Mar 2000) |
| oophagia | Oophagy The habitual eating of eggs; subsisting largely on eggs. Origin: G. Oon, egg, + phago, to eat (05 Mar 2000) |
| oophor- | Oophoro- The ovary. See: oo-, ovario-. Origin: Mod. L. Oophoron, ovary, fr. G. Oophoros, egg-bearing (05 Mar 2000) |
| oophoralgia | Synonym: ovarialgia. Origin: oophor-+ G. Algos, pain (05 Mar 2000) |
| oophore | <botany> An alternately produced form of certain cryptogamous plants, as ferns, mosses, and the like, which bears antheridia and archegonia, and so has sexual fructification, as contrasted with the sporophore, which is nonsexual, but produces spores in countless number. In ferns the oophore is a minute prothallus; in mosses it is the leafy plant. Origin: Gr. Egg-bearing; an egg + to bear. Source: Websters Dictionary (01 Mar 1998) |
| oophorectomy | <procedure, surgery> The removal of an ovary or ovaries. Synonym: ovariectomy. Origin: Gr. Ektom = excision (18 Nov 1997) |
| oophoric | <botany> Having the nature of, or belonging to, an oophore. Source: Websters Dictionary (01 Mar 1998) |
| oophoridium | Origin: NL, dim. Fr. Gr. See Oophore. <botany> The macrosporangium or case for the larger kind of spores in heterosporous flowerless plants. Source: Websters Dictionary (01 Mar 1998) |