Word.ws English Dictionary

circannual

circannual adjective: of biological processes: having or occurring in annual cycles or periods.

Adjective

circannual (not comparable)

  1. Of biological processes: having or occurring in annual cycles or periods
    • Light pollution can interfere with the circannual migration of birds.
    • […] because morbidity and mortality from cardiovascular disease also reveal statistically significant circadian and circannual rhythms.1956, USAF School of Aerospace Medicine, Report [80-114], [1956], page 11

Examples of circannual in a sentence

  • Circannual rhythms control reproductive function in seasonal breeders.2000, Martin Hume Johnson, Barry J. Everitt, Essential Reproduction, page 110:
  • Seasonal variations in locomotor activity are generated by a circannual clock […].2001, Joseph S. Takahashi, Fred W. Turek, Robert Y. Moore, Handbook of Behavioral Neurobiology, page 523:

Origin of circannual

Formed as Latin circā (“about”) + annual, after circadian.

Words formed from circannual

Questions about circannual

What does circannual mean?
Circannual means of biological processes: having or occurring in annual cycles or periods.
How do you use circannual in a sentence?
Circannual rhythms control reproductive function in seasonal breeders.
What part of speech is circannual?
Circannual is an adjective.

Words near circannual in the dictionary

  1. Circaean
  2. circahoralian
  3. circalittoral
  4. circalunar
  5. circalunidian
  6. circannual
  7. circannually
  8. circar
  9. circars
  10. Circas
  11. circasemidian

Source and license

Adapted from Wiktionary: circannual (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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Cite this entry: “circannual.” Word.ws, https://word.ws/circannual. Based on Wiktionary, CC BY-SA 4.0.