Skip to Content
Medical Term:


Pronunciation: es-tra-di'ol, es-tra'de-ol

Definition: the most potent naturally occurring estrogen in mammals, formed by the ovary, placenta, testis, and possibly the adrenal cortex; therapeutic indications for estradiol are those typical of an estrogen. a-Estradiol (17a-estradiol), exhibits considerably less biologic activity.

Synonym(s): estrogenic hormone, oestradiol

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.