circ·​an·​nu·​al (ˈ)sər-ˈkan-yə(-wə)l How to pronounce circannual (audio)
: having, characterized by, or occurring in approximately yearly periods or cycles (as of biological activity or function)
circannual rhythmicity

Dictionary Entries Near circannual

Cite this Entry

“Circannual.” Medical Dictionary, Merriam-Webster, Accessed 29 Jan. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words Named After People

  • name tags
  • Namesake of the leotard, Jules Léotard had what profession?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?