oestriol

US estriol

/ (ˈiːstrɪˌɒl, ˈɛstrɪ-) /

noun

a weak oestrogenic hormone secreted by the mammalian ovary: a synthetic form is used to treat oestrogen deficiency. Formula: C 18 H 24 O 3

Word Origin for oestriol

C20: from oestrin + tri- + -ol 1