circadian etymology

English word circadian comes from Latin circus, Latin diem, English -an

Detailed word origin of circadian

Dictionary entryLanguageDefinition
circus Latin (lat) A circular line or orbit; circle, ring. A racecourse or space where games are held, especially one that is round. The spectators in a circus; a circus.
diem Latin (lat)
-an English (eng) Appended to nouns to form an agent noun. (When males with a profession are distinguished from females, males are -an, females -(i)enne.). Of or pertaining to; an adjectival suffix appended to various words, often nouns, to make an adjective form. (Often added to words of Latin origin, but also used with words of other origins. When a word ends in a, -n is used instead.).
circadian English (eng) (biology) of, relating to, or showing rhythmic behaviour with a period of 24 hours; especially of a biological process.

Words with the same origin as circadian

Descendants of circus
Arctic Circle Circleville Piccadilly Circus charper charperer circ circa circle circular circulene circum- circumambulate circumcise circumference circumnavigate circumvent cirque cline encirclement research sargable search sharping-omi squircle squircular
Descendants of diem
Dies Journey Tuesday Wednesday abatjour adjourn churnalist diarial diary diurnal diurnal aberration diurnal arc diurnalist diurnality equidiurnal hodiern journal journey journo meridian semidiurnal sine die terdiurnal triduan
Descendants of -an
antiquarian centenarian contrarian cosmopolitan crustacean documentarian dystopian ecclesiastical hangover hi icky injun librarian ovarian peeler reptilian republican sectarian seminarian surname theologian tho thru totalitarian