def·lo·ra·tion 
(dĕf′lə-rāshən)
(dĕf′lə-rāshən)n.
1. The act of deflowering.
2. Rupture of the hymen, typically in sexual intercourse.
[Middle English defloracioun, from Late Latin dēflōrātiō, dēflōrātiōn-, from dēflōrātus, past participle of dēflōrāre, to deflower; see DEFLOWER.]