New American Oxford Dictionary
mating
mat ing |ˈmātiNG ˈmeɪtɪŋ | ▶noun the action of animals coming together to breed; copulation: ovulation occurs only if mating has taken place.
Oxford Dictionary
mating
mat ¦ing |ˈmeɪtɪŋ | ▶noun the action of animals coming together to breed; copulation: courtship and mating also occur on land.
Oxford Thesaurus
mating
mating noun after mating, the female butterfly lays between 50 and 1000 eggs: copulation, copulating, coupling, sexual intercourse, intercourse, sex, procreation; pairing, breeding, union; formal coitus, coition. ▶adjective a mating pair of mute swans: sexually active, breeding.