circadian

Definitions

From Latin circa (about, around) + diēs (day) = 'about a day.' A circadian rhythm is the body's internal clock that loops on a roughly-24-hour cycle — sleep, hunger and alertness all rise and fall around the day. Here circ keeps its 'around/about' sense rather than a literal circle.

Common Collocations

• 1.circadian rhythm昼夜节律
• 2.circadian clock生物钟
• 3.circadian cycle昼夜循环

Example Sentences

• 1.

  Jet lag disrupts your circadian rhythm.

• 2.

  Exposure to morning light helps reset the circadian clock.