noun
also pro·ges·ta·gen prōˈjestəjə̇n, -ˌjen
( -s )
Etymology: progest ational + -ogen (as in estrogen ) or -agen (by alteration)
: any of several progestational steroids (as progesterone or norethindrone)
• pro·ges·to·gen·ic prōˌjestəˈjenik, -ēk adjective