premenstruum

premenstruum

 [pre-men´stroo-um] the period immediately before menstruation.

pre·men·stru·um

(prē-men'strū-ŭm), The few days preceding menstruation. [pre- + L. menstruum, ntr. of menstruus, monthly, pertaining to menstruation]

pre·men·stru·um

(prē-men'strū-ŭm) The few days preceding menstruation. [pre- + L. menstruum, ntr. of menstruus, monthly, pertaining to menstruation]