n. An estrogenic hormone excreted by the ovaries; sometimes manufactured synthetically for use in cases of estrogen deficiency.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a naturally occurring weak estrogenic hormone secreted by the mammalian ovary; synthesized (trade name Estronol) and used to treat estrogen deficiency
Word Usage
"As the amount of estradiol produced by the ovaries decreases as women approach menopause, the adrenal gland provides an important source of another type of estrogen called estrone."