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a generic term for any of the estrus-producing compounds (female sex hormones), including estradiol, estriol, and estrone. Called also estrogenic hormone. In humans, the estrogens are formed in the ovary, adrenal cortex, testis, and fetoplacental unit, and are responsible for female secondary sex characteristic development, and during the menstrual cycle, act on the female genitalia to produce an environment suitable for fertilization, implantation, and nutrition of the early embryo. Uses for estrogens include oral contraceptives, hormone replacement therapy, advanced prostate or postmenopausal breast carcinoma treatment, and osteoporosis prophylaxis.
conjugated e's a mixture of the sodium salts of the sulfate esters of estrone and equilin; therapeutic uses are similar to those of other estrogens; administered orally, intravenously, intramuscularly, or intravaginally.
esterified e's a mixture of esters of estrogenic substances, principally estrone, having therapeutic uses similar to those of other estrogens.


Generic term for any substance, natural or synthetic, that exerts biologic effects characteristic of estrogenic hormones such as 17β-estradiol. Estrogens are formed by the ovary, placenta, testes, and possibly the adrenal cortex, as well as by certain plants; they stimulate secondary sexual characteristics, and exert systemic effects, such as growth and maturation of long bones, and are used therapeutically in any disorder attributable to estrogen deficiency or amenable to estrogen therapy, such as menstrual disorders and menopausal problems. They control the course of the menstrual cycle.
Synonym(s): estrin, oestrogen
[G. oistrus, -heat, estrus, + -gen, producing]


/es·trin/ (es´trin) estrogen.


See estrogen.

estrin (es´trin),

n the generic term for the ovarian estrogens estriol, estrone, and estradiol.


References in periodicals archive ?
1 -- color) Cyclists make their way down Sierra Highway during the Tony Estrin Memorial Ride in Canyon Country Saturday morning.
Klein Becker adds vitamin B-6 and magnesium to Estrin D, and claims that they elevate mood and stabilize hormonal fluctuations in menopausal women* The company's evidence?
We've never been a band to say this is the one type of music we play,'' Estrin, 24, said.
But readers may also find themselves frustrated in trying to grasp the extent of agency Estrin claims for them.
Estrin was a teacher at Mulholland Middle School in Van Nuys and was scheduled to retire in October.
Privatisation was mainly to insiders--workers and managers--whose incentives to improve performance were more ambiguous than those of outsiders (see Earle and Estrin, 1996).
Judy Estrin is a networking technology pioneer and Silicon Valley leader.
Tony Estrin, 58, was riding on Sierra Highway just south of Sand Canyon Road about 8:50 a.
Estrin is CEO of JLABS, LLC and was Chief Technology Officer for Cisco Systems.
Anthony Estrin, 58, of Stevenson Ranch was knocked from his bicycle and hit a parked trailer, California Highway Patrol Sgt.
Estrin is CEO of JLABS, LLC, formerly known as Packet Design Management Company, LLC.
Also in that category are John Mayer for ``Daughters,'' Keys for ``If I Ain't Got You,'' Tim Nichols and Craig Wiseman for ``Live Like You Were Dying'' as performed by Tim McGraw and Daniel Estrin, and Douglas Robb for ``The Reason'' as performed by Hoobastank.