circadian的词源

英文词源

circadian (adj.)

coined 1959 from Latin circa "about" (see circa) + diem, accusative singular of dies "day" (see diurnal). The original use is in circadian rhythm.

中文词源

circadian：生理节奏的

circ-,圈，词源同circle.-dian,天，见diurnal.

该词的英语词源请访问趣词词源英文版：circadian 词源，circadian 含义。