| metacontrast | Inhibition of the brightness of illumination when an adjacent visual field is illuminated. (05 Mar 2000) |
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| metaconule | The distal intermediate cusp of an upper molar tooth. Origin: meta-+ G. Konos, a cone (05 Mar 2000) |
| metacresol | A local antiseptic with a higher germicidal power than phenol and less toxicity to tissues; used in disinfectants and fumigants; its acetate derivative is used as a topical antiseptic and fungicide. Synonym: metacresol. (05 Mar 2000) |
| metacrolein | <chemistry> A polymeric modification of acrolein obtained by heating it with caustic potash. It is a crystalline substance having an aromatic odour. Origin: Pref. Met- + acrolein. Source: Websters Dictionary (01 Mar 1998) |
| metacromion | <anatomy> A process projecting backward and downward from the acromion of the scapula of some mammals. Source: Websters Dictionary (01 Mar 1998) |
| metacryptozoite | The exoerythrocytic stage that develops from merozoites formed by the first, or cryptozoite, generation; the cryptozoite and metacryptozoite generations comprise the primary exoerythrocytic stages of malaria development (prepatent period) prior to infection of red blood cells. Origin: meta-+ G. Kryptos, hidden, + zoon, animal (05 Mar 2000) |
| metacyesis | Synonym: ectopic pregnancy. Origin: meta-+ G. Kyesis, pregnancy (05 Mar 2000) |
| metadiscoidal | <anatomy> Discoidal by derivation; applied especially to the placenta of man and apes, because it is supposed to have been derived from a diffused placenta. Origin: Meta- + discoidal. Source: Websters Dictionary (01 Mar 1998) |
| metadysentery | Old term for bacillary dysentery. (05 Mar 2000) |
| metafacial angle | The angle between the pterygoid processes and the base of the skull. Synonym: Serres' angle. (05 Mar 2000) |
| metafemale | <genetics> Human female in which there are four X chromosomes in addition to 44 autosomes. (18 Nov 1997) |
| metagastric | <zoology> Of or pertaining to the two posterior gastric lobes of the carapace of crabs. Origin: Pref. Meta- + gastric. Source: Websters Dictionary (01 Mar 1998) |
| metagenesis | 1. <biology> The change of form which one animal species undergoes in a series of successively produced individuals, extending from the one developed from the ovum to the final perfected individual. Hence, metagenesis involves the production of sexual individuals by nonsexual means, either directly or through intervening sexless generations. Opposed to monogenesis. See Alternate generation, under Generation. 2. <biology> Alternation of sexual and asexual or gemmiparous generations; in distinction from heterogamy. Origin: Pref. Meta- + genesis. Source: Websters Dictionary (01 Mar 1998) |
| metagenetic | <biology> Of or pertaining to metagenesis. Source: Websters Dictionary (01 Mar 1998) |
| metagenic | <biology> Metagenetic. Source: Websters Dictionary (01 Mar 1998) |