circannual
adjective
circ·an·nu·al
(ˈ)sər-ˈkan-yə(-wə)l 
: having, characterized by, or occurring in approximately yearly periods or cycles (as of biological activity or function)
circannual rhythmicity
Cite this Entry
“Circannual.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/circannual. Accessed 19 Jul. 2025.
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