copulation copulation /ˌkɑpjəˈleɪʃən/

noun

1. Sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur  ( carnal knowledge , coition , coitus , copulation , intercourse , relation , sexual congress , sexual intercourse , sexual relation , sex act )
   sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur
    Intercourse, also known as sex, is the act of sexual activity between two individuals
   Intercourse, also known as sex, is the act of sexual activity between two individuals