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Dictionary

nor•eth•in•drone

Pronunciation: (nôr-eth'in-drōn"), [key]
—n. Pharm.
an orally active progestin, C₂₀H₂₆O₂, used as a progesterone, esp. as an oral contraceptive in combination with an estrogen.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

norepinephrine

norethynodrel

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