Word.ws English Dictionary

semicircadian

semicircadian adjective: occurring twice in a 24 hour period.

Adjective

semicircadian (not comparable)

  1. Occurring twice in a 24 hour period.
    • In chronobiology, a circasemidian rhythm is a physiological arousal cycle that peaks twice in a 24-hour day. It may also be called the semicircadian rhythm .2022 December 4, Wikipedia contributors, “Circasemidian rhythm”, in English Wikipedia, Wikimedia Foundation
    • During early pregnancy, PRL secretion occurs in a semi-circadian rhythm, characterized by a large nocutrnal surge and a slightly smaller diurnal surge.2020 August 12, Nira Ben-Jonathan, Dopamine: Endocrine and Oncogenic Functions, CRC Press, pages 88-89

Origin of semicircadian

From semi- + circadian.

Questions about semicircadian

What does semicircadian mean?
Semicircadian means occurring twice in a 24 hour period.
What part of speech is semicircadian?
Semicircadian is an adjective.

Words near semicircadian in the dictionary

  1. semichorus
  2. semichoruses
  3. semichot
  4. semichoth
  5. semichronic
  6. semicircadian
  7. semicircle
  8. semicircled
  9. semicircles
  10. semicircling
  11. semicircular

Source and license

Adapted from Wiktionary: semicircadian (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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