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. SYN: chronaxia, chronaxis, chronaxy. [G. chronos, time, + axia, value]
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chron·ax·ie or chron·axy 'krōn-.ak-sē, 'krän- also chron·ax·ia krō-'nak-sē-ə, krə-, krän-'ak- n, pl -ax·ies also -ax·ias the minimum time required for excitation of a structure (as a nerve cell) by a constant electric current of twice the threshold voltage compare RHEOBASE
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chro·nax·ie (kroґnak-se) chronaxy.Medical dictionary. 2011.