coitus

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++co·i·tus /ˈkəʊətəs, ˈkɔɪtəs $ ˈkoʊ-, ˈkɔɪ-/ noun [uncountable] SEX/HAVE SEX WITH technical the act of having sex 性交 SYN sexual intercourse —coital adjective

Examples from the Corpus

coitus• For her, coitus releases progesterone into her system, calming her, but not taking her into sleep.• Presumably the missionary position in coitus would have its dangers.• In the psychosomatic sphere it might cause headaches during or because of coitus or a tendency to nausea whenever coitus was performed.• They specifically described and recommended the use of coitus interruptus and other contraceptive methods in marriage.Origin coitus (1800-1900) Latin past participle of coire, from co- ( → CO-) + ire “to go”