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.
| 词汇 | circadian |
| 词根词缀 | Online Etymology Dictionary 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. |
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