| megamerozoite | A large merozoite. Synonym: megamerozoite. Origin: macro-+ G. Meros, part, + zoon, animal (05 Mar 2000) |
|---|---|
| megameter | <astronomy, instrument> An instrument for determining longitude by observation of the stars. Origin: F. Megametre. (29 Oct 1998) |
| megampere | <physics, unit> A million amperes. Source: Websters Dictionary (01 Mar 1998) |
| meganucleus | The larger nucleus (or sometimes nuclei) in ciliate protozoans. Derived from the micronucleus by a process of DNA polytenisation. The DNA in the macronucleus is actively transcribed. The macronucleus degenerates before conjugation. (18 Nov 1997) |
| megaphyton | <paleontology> An extinct genus of tree ferns with large, two-ranked leaves, or fronds. Origin: NL, from Gr. Megas great + fyton plant. Source: Websters Dictionary (01 Mar 1998) |
| megapode | <ornithology> Any one of several species of large-footed, gallinaceous birds of the genera Megapodius and Leipoa, inhabiting Australia and other Pacific islands. See Jungle fowl under Jungle, and Leipoa. Origin: Mega- + Gr. Poys, podos, foot. Source: Websters Dictionary (01 Mar 1998) |
| megaprosopia | Synonym: macroprosopia. Origin: mega-+ G. Prosopon, face (05 Mar 2000) |
| megaprosopous | Relating to or exhibiting macroprosopia. Synonym: megaprosopous. (05 Mar 2000) |
| megarectum | Extreme dilation of the rectum. (05 Mar 2000) |
| megascope | <instrument> A modification of the magic lantern, used especially. For throwing a magnified image of an opaque object on a screen, solar or artificial light being used. Origin: Mega- + -scope: cf. F. Megascope. Source: Websters Dictionary (01 Mar 1998) |
| megaseme | <anatomy> Having the orbital index relatively large; having the orbits narrow transversely; opposed to microseme. Origin: Mega- + Gr. Sing, mark: cf. F. Megaseme. Source: Websters Dictionary (01 Mar 1998) |
| megasigmoid | Enlargement or dilation of the sigmoid colon. Synonym: megasigmoid. (05 Mar 2000) |
| megasomia | Overly large body. A child with macrosomia has significant overgrowth. (12 Dec 1998) |
| megasporangium | The larger of the two kinds of sporangia produced in the sexual life cycle of a heterosporous plant. (09 Oct 1997) |
| megaspore | Haploid spore produced by a plant sporophyte, that develops into a female gametophyte. (18 Nov 1997) |