1) Catamenia 2) Discharge 3) Emission 4) Expelling 5) Flow 6) Menstruation 7) Menstruum 8) Period 1) Catamenia 2) Hypermenorrhea 3) Menorrhagia 4) Menstruation 5) Oligomenorrhea 
• (n. pl.) The catamenial or menstrual discharge, a periodic flow of blood or bloody fluid from the uterus or female generative organs.
(men´sēz) menstruation.
Menstruation
Men'ses noun plural [ Latin mensis month, plural menses months, and the monthly courses of women. Confer Month .] (Medicine) The catamenial or menstrual discharge, a periodic flow of blood or bloody fluid from the uterus or female generative organs. 
Type: Term Pronunciation: men′sēz Definitions: 1. A periodic physiologic hemorrhage occurring at intervals of about 4 weeks and having its source in the uterine mucous membrane; usually the bleeding is preceded by ovulation and predecidual changes in the endometrium. Synonyms: menstrual period
menstrual flow.