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- n. Alternative form of ethinylestradiol.
Sorry, no etymologies found.
Taken orally, ly-ethynylestradiol will produce the effects of the natural estrogens in one-tenth the dose.
Thus, there is \j-ethynylestradiol, in which a two-carbon chain is attached to carbon-iy in addition to the hydroxyl group.
It is not quite as powerful as ly-ethynylestradiol, but it is three to five times as powerful as the natural hormones.
For example, freshwater habitats around the world have been found contaminated with the synthetic estrogen used in contraceptive pills, ethynylestradiol.