"Copulation" refers to the sexual activity or process of two animals or humans coming together and having sexual intercourse or mating. Full definition
This is the first known case of copulation with what the researchers call a «disposable» penis. (sciencemag.org)
Interpretation: Used in play or feeding; heard in females after copulation. (theanimalclinicstpete.com)
The male green - veined white butterfly, which is widespread across Europe and Asia, injects methyl salicylate along with its sperm into the female during copulation. (discovermagazine.com)