Main Entry: in·tro·mis·sion

Pronunciation: \ˌin-trə-ˈmi-shən\

Function: noun

Etymology: French, from Middle French, from Medieval Latin intromission-, intromissio, from Latin intromittere

Date: 1601

: the act or process of intromitting; especially : the insertion or period of insertion of the penis in the vagina in copulation