Breadcrumb Home > Dictionary > Index C coitus: Meaning and Definition of Find definitions for: co•i•tus Pronunciation: (kō'i-tus), [key] — n. sexual intercourse, esp. between a man and a woman. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: coitus (Thesaurus) coition coitus interruptus ✖ Related Content Daily Word Quiz: prandial Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language