intromission

noun

in·​tro·​mis·​sion ˌin-trə-ˈmi-shən 

: the act or process of intromitting

especially : the insertion or period of insertion of the penis in the vagina in copulation

Examples of intromission in a Sentence

Recent Examples on the Web

During intromission, dopamine and acetylcholine would oscillate in the brain regularly with the mouse’s thrusting motions. — Elana Spivack, Popular Science, 19 Mar. 2025

Word History

Etymology

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

First Known Use

1601, in the meaning defined above

Rhymes for intromission

• abolition
• acquisition
• admonition
• ammunition
• apparition
• apposition
• coalition
• competition
• composition
• definition
• deglutition
• demolition

Medical Definition

intromission

noun

in·​tro·​mis·​sion ˌin-trə-ˈmish-ən 

: the insertion or period of insertion of the penis in the vagina in copulation