circadian
adjective /sɜːˈkeɪdiən/
/sɜːrˈkeɪdiən/
[only before noun] (specialist)- connected with the changes in the bodies of people or animals over each period of 24 hours
（每 24 小时人或动物体内变化）昼夜节律的，生理节奏的 - Jet lag occurs because jet travel ignores the circadian timekeeper.
时差反应的发生是因为时差旅行忽略了生物钟。
Collocations DictionaryCircadian is used with these nouns:- clock
- rhythm
词源1950s: formed irregularly from Latin circa ‘about’ + dies ‘day’. - Jet lag occurs because jet travel ignores the circadian timekeeper.