| 释义 |
men·stru·a·tion
\ˌmenztrəˈwāshən, ˌmen(t)str-, ÷menzˈtrā-, ÷men(t)ˈstrā-\ noun
(-s)
Etymology: Late Latin menstruatus + English -ion
: a discharging of blood, secretions, and tissue debris associated with necrotic changes of the uterine mucosa that recurs in nonpregnant breeding-age females of various primates at intervals of 3 1/2 to 5 weeks (as in women typically at 4 week intervals and lasting 3 to 5 days) and that is usually held to represent a readjustment of the uterus to the nonpregnant state following proliferative changes accompanying the preceding ovulation; also : an instance of the occurrence of this discharging : period |