What does copulation mean?
Copulation is the formal, scientific term for sexual intercourse between animals — the physical act in which male and female reproductive organs unite so that sperm can be transferred to the female. It is used chiefly in biology, zoology, and medicine, where precision matters: researchers might measure the frequency or duration of copulation when studying animal behaviour, reproduction, or evolutionary strategy. Derived from the Latin verb copulare, meaning 'to join together', the word shares its root with 'copula', the grammatical link between subject and predicate, which hints at its core sense of union or joining. Unlike everyday terms such as 'mating' or 'intercourse', 'copulation' sounds deliberately technical and detached, making it well suited to academic writing, field guides, and documentary narration. It is a countable noun with the plural 'copulations', though it frequently appears uncountably, as in 'the season of copulation'.
nounSexual intercourse between animals, especially the physical act by which the male deposits sperm in the female. In biology, it refers specifically to the union of reproductive organs during mating.
- The act of sexual intercourse between animals, involving the physical union of reproductive organs.
- (In grammar, rare) The linking of subject and predicate by a copular verb.
"In many bird species, copulation is a brief affair, lasting only a few seconds."
"Successful copulation in frogs often occurs in amplexus, with the male clasping the female tightly."
"The biologist recorded the duration of copulation across several mating pairs."
Countable when referring to individual instances of the act; uncountable when referring to the act or process in general.
"Researchers logged over forty copulations during the breeding season."
The word 'copulation' comes from the Latin for 'a joining together' — the same root that gives us 'copula', the grammatical term for a linking verb like 'is'.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of copulation
Copulation comes from Latin copulatio, meaning 'a joining together', formed from copulare ('to couple, to bind') plus the noun-forming suffix -tio. The underlying root is the Latin noun copula, meaning a bond or tie. English adopted the word around the late Middle Ages to early modern period, initially carrying broad senses of joining or uniting before narrowing toward its primary biological meaning of sexual union. Its relatives include 'copulate', 'copulatory', and the grammatical term 'copula'.
Related word forms
How copulation is actually used
'Copulation' is a formal, scientific term, most common in zoology, biology, and veterinary contexts. In everyday English, words like 'mating' or 'intercourse' are more typical. It carries a clinical rather than emotive connotation.
Easily confused with copulation
While both refer to sexual union, 'coupling' is a broader term that can describe any pairing or joining of two things, whereas 'copulation' specifically denotes the biological act of sexual intercourse.