circannual

[ sur-kan-yoo-uhl ]
/ sɜrˈkæn yu əl /

adjective Biology.

noting or pertaining to a biological activity or cycle that recurs yearly.

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Origin of circannual

First recorded in 1970–75; circ(a) + annual
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020