vaginismusPronunciation: /ˌvadʒɪˈnɪzməs/Definition of vaginismus noun [mass noun] painful spasmodic contraction of the vagina in response to physical contact or pressure, especially during sexual intercourse. Origin: mid 19th century: modern Latin, from Latin vagina (see vagina)vaginismus in other Oxford dictionaries Definition of vaginismus in the US English dictionary