ˌnȯrəˈthīnōˌdrel,-ˈthin-, -ˈethə̇n- noun
( -s )
Etymology: nor- + ethyn yl + -odr- (perhaps alteration of hydro- ) + -el (of unknown origin)
: a progesterone derivative C 20 H 26 O 2 used in oral contraceptives and clinically in the treatment of abnormal uterine bleeding and the control of menstruation