defloration
noun
de·flo·ra·tion ˌde-flə-ˈrā-shən 
ˌdē-flȯ-
: rupture of the hymen (as by sexual intercourse)
Word History
Etymology
Middle English defloracioun, from Middle French & Late Latin; Middle French defloracion, from Late Latin defloration-, defloratio, from deflorare — see deflower
First Known Use
15th century, in the meaning defined above
Medical Definition
defloration
noun
de·flo·ra·tion ˌdef-lə-ˈrā-shən ˌdē-flə-
ˌdē-flə- : rupture of the hymen