Circadian

usgb/sɜːrˈkeɪdiən/
adjective

Relating to actions or changes in a living thing that happen regularly in a 24-hour period.

The human sleep-wake cycle is an example of a circadian rhythm.
Visual representation of "circadian" - Relating to actions or changes in a living thing that happen regularly in a 24-hour period

Often appears as...

  • circadian rhythm
  • circadian cycle
Definition 1 of 1
Visual representation of "circadian"
LampPro Tip 1/3

Not Just Night

The word 'circadian' goes beyond night-related patterns and includes all biological cycles repeated every 24 hours.

Illustration for Not Just Night
Plants have circadian rhythms that dictate when their flowers open.
LampPro Tip 2/3

Scientific Context

'Circadian' is mainly used in scientific contexts to discuss biology, physiology, and behavior.

Illustration for Scientific Context
Researchers study circadian rhythms to understand jet lag.
LampPro Tip 3/3

Daily Cycles

'Circadian' often precedes 'rhythm' to specify the daily cycles of biological activities.

Illustration for Daily Cycles
Doctors recommend sleeping in sync with your natural circadian rhythm.
Visual representation of the word "Circadian"

Never forget "Circadian"

Humans forget easily. That's why you should download WordUp: Smart reminders, word games, AI practice, and much more!

Download on the App StoreGet it on Google PlayGet it from MicrosoftGet it on AppGallery
Chrome

WordUp Chrome Extension

As you browse the web instantly look up words you don’t know.

Get Chrome Extension
Back to top