[es-tree-awl, -ol, -trahy-]
Biochemistry. an estrogenic hormone, C18H21(OH)3, occurring in urine during pregnancy.
Pharmacology. a commercial form of this compound, obtained from human placentas or the urine of pregnant women, used in conditions involving estrogen deficiency.
Origin of estriol
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[ĕs′trī-ôl′, -ōl′, ĕ-strī′-]
A metabolite of estradiol and usually the predominant estrogenic metabolite found in the urine of pregnant women.theelol
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.