Estriol
/ˈiːstri.ɒl/noun
A naturally occurring estrogen hormone, especially found in pregnancy.
Did you know?The name comes from *estrus* plus the chemical suffix *-ol*, and *estrus* ultimately traces back to a Greek word for a gadfly—an old image of restless, driven heat.
Etymological Timeline
Ancient Greek
Greek
oistros
“gadfly; frenzy, maddening drive”
Latin
Latin
oestrus
“a gadfly; wild passion, sexual heat”
19th Century
English
estrus / oestrus
“the recurring period of sexual receptivity in female mammals”
Early 20th Century
English
estrogen
“a hormone producing estrus-like effects”
1930s
English
estriol
“a specific estrogen steroid hormone”