Relating to or of the nature of coition; describing something pertaining to sexual intercourse or union.
From coition + -al (adjective suffix). A rare medical/scientific adjective derived from the Latin-based noun coition.
This word barely survives in modern English—medical terminology standardized on 'coital' and 'coitus,' leaving 'coitional' as an archaic variant that appears mainly in old scientific texts and historical medical literature.
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