kəʊˈɪʃ(ə)n ˈkəʊ.ɪ.təs ˈkɔɪ.təs kɒp.jəˈleɪ.ʃən ˈɪn.tɚˌkɔɹs ˈɪn.təˌkɔːs ɹɪˈleɪʃən sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur communication between individuals