estrogen (US) noun
or British oestrogen /ˈɛstrəʤən/ Brit /ˈiːstrəʤən/ or British oestrogen /ˈɛstrəʤən/ Brit /ˈiːstrəʤən/ Learner's definition of ESTROGEN
[noncount] medical
: a substance (called a hormone) that occurs naturally in women雌（性）激素 ◊ Estrogen plays an important role in the development of the female characteristics of a woman's body.雌激素对女子身体的女性特征发育起重要作用。
— estrogenic
(US) or British oestrogenic /ˌɛstrəˈʤɛnɪk/ Brit /ˌiːstrəˈʤɛnɪk/ adjective, technical