Circadian (adj)
sur-kay-dee-un
(of biological processes) recurring naturally on a twenty-four-hour cycle, even in the absence of light fluctuations.
1950s formed irregularly from Latin circa ‘about’ + dies ‘day’.
Example sentences
“The insects lived on a circadian rhythm.”
Praetorian (adj) (noun) pri-taw-ree-un of or relating to a praetor (a magistrate in the Roman republic). a soldier of the Praetorian Guard (Roman imperial army) First recorded in 1375–1425; late…
