Definition of premenstrual adjective from the Oxford Advanced American Dictionary

 

premenstrual

 adjective
adjective
NAmE//ˌpriˈmɛnstruəl//
 
, NAmE//ˌpriˈmɛnstrəl//
 
 
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happening or experienced before menstruation Many women suffer from premenstrual syndrome/tension, causing headaches and depression. see also PMS
See the Oxford Advanced Learner's Dictionary entry: premenstrual