premenstrua
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premenstrua — n. time directly preceding the menstrual period … English contemporary dictionary
premenstruum — The few days preceding menstruation. [pre + L. menstruum, ntr. of menstruus, monthly, pertaining to menstruation] * * * pre·men·stru·um men(t) strə wəm n, pl stru·ums or strua strə wə the period or physiological state that immediately precedes… … Medical dictionary