| chronaxie | A measurement of excitability of nervous or muscular tissue; the shortest duration of an effective electrical stimulus having a strength equal to twice the minimum strength required for excitation. Synonym: chronaxia, chronaxis, chronaxy. Origin: G. Chronos, time, + axia, value (05 Mar 2000) |
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| nominate subordinate taxon | <zoology> A subordinate taxon which bears the same names as its immediate higher taxon. Thus Grus grus is the nominate species of the genus Grus. (09 Jan 1998) |