/ Dictionary / Index C coition: Meaning and Definition of Find definitions for: co•i•tion Pronunciation: (kō-ish'un), [key] — n. coitus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: coition (Thesaurus) coital exanthema coitus Related Content Daily Word Quiz: pedagogy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language