circadianadj
uk/sɜːˈkeɪ.di.ən/us/sɝːˈkeɪ.di.ən/specializedused to describe the processes in animals and plants that happen naturally during a 24-hour period:
Our circadian clock makes it difficult to sleep during the day.
Thesaurus: synonyms and related words
Days & times of day
- afternoon
- afternoons
- am
- at the crack of dawn idiom
- bedtime
- crepuscular
- dawn
- last orders
- lighting-up time
- local time
- lunch hour
- lunchtime
- office hours
- opening time
- overnight
- playtime
- pm
- rush hour
- twilit
- watershed
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