estrogen:
female sex hormone, produced chiefly by the
ovary, but also in a small amount by the
adrenal cortex and the
testis, and named for its role in lower animals inducing heat or
estrus in the female [from Greek,
olstros, gadfly; from Latin,
oestrus, vehement desire, that which drives one mad. From Latin,
oestrus, gadfly; Greek,
oistos, vehement desire, that which drives one mad.] In biochemical structure, there are several different but related
steroid hormones that qualify as estrogens, some more closely chemically related than others, and some more biologically potent. They differ in biological strength and effectiveness.
See also estrus;
progesterone
Dictionary of Sexology Project: Main Index