Medical Dictionary
Main Entry:
es·tri·ol Pronunciation:
'es-"trI-"ol, e-'strI-, -"Ol Variant:
or chiefly British oes·tri·ol /'E-"strI-"ol,E-'strI-, -"Ol/ Function:
noun : a relatively weak natural estrogenic hormone that is a glycol C
18H
24O
3 found in the body chiefly as ametabolite of estradiol, is the main estrogen secreted by the placenta during pregnancy, and is the estrogen typically found in the urine of pregnant women