单词	estrone
释义	estrone noun es·​trone ˈe-ˌstrōn  : a natural estrogenic hormone that is a ketone C18H22O2 found in the body chiefly as a metabolite of estradiol, that is also secreted especially by the ovaries, and that is used to treat various conditions (such as ovarian failure and menopausal symptoms) relating to estrogen deficiency Example Sentences Recent Examples on the Web Respeggt found a way around that: punch a 0.3-millimeter-wide hole in a shell, suck up a drop of embryonic urine, and test for estrone sulfate, a hormone only female chicks produce. Popular Science, 3 Dec. 2019 Word History Etymology estrane First Known Use 1933, in the meaning defined above Medical Definition estrone noun es·​trone ˈes-ˌtrōn  variants or chiefly British oestrone ˈē-ˌstrōn  : a natural estrogenic hormone that is a ketone C18H22O2 found in the body chiefly as a metabolite of estradiol, is also secreted especially by the ovaries, and is used to treat various conditions (as ovarian failure and menopausal symptoms) relating to estrogen deficiency see theelin
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