Search Result for "menstrual phase":
Wordnet 3.0

NOUN (1)

1. the phase of the menstrual cycle during which the lining of the uterus is shed (the first day of menstrual flow is considered day 1 of the menstrual cycle); 



WordNet (r) 3.0 (2006):

menstrual phase
    n 1: the phase of the menstrual cycle during which the lining of
         the uterus is shed (the first day of menstrual flow is
         considered day 1 of the menstrual cycle)