Main Entry: onan·ism

Pronunciation: \ˈō-nə-ˌni-zəm\

Function: noun

Etymology: probably from New Latin onanismus, from Onan, son of Judah (Gen 38:9)

Date: circa 1741

1 : masturbation
2 : coitus interruptus
3 : self-gratification

— onan·is·tic \ˌō-nə-ˈnis-tik\ adjective