Meaning of estriol

es•tri•ol

Pronunciation: (es'trē-ôl", -ol", -trī-), [key]
— n.
  1. an estrogenic hormone, CH(OH), occurring in urine during pregnancy.
  2. a commercial form of this compound, obtained from human placentas or the urine of pregnant women, used in conditions involving estrogen deficiency.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: