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norethindrone

American

[nawr-eth-in-drohn] / nɔrˈɛθ ɪnˌdroʊn /

noun

Pharmacology.

an orally active progestin, C 2 0 H 2 6 O 2 , used as a progesterone, especially as an oral contraceptive in combination with an estrogen.

Etymology

Origin of norethindrone

By shortening and alteration of parts of its chemical name

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Djerassi spent four more years with Ciba, researching steroids, before joining Syntex in Mexico City, where, in addition to norethindrone, he worked on synthesizing cortisone.

From Chicago Tribune • Jan. 31, 2015

Dr. Djerassi spent four more years with Ciba, researching steroids, before joining Syntex in Mexico City, where, in addition to norethindrone, he worked on synthesizing cortisone.

From Washington Post • Jan. 31, 2015

The two best known are norethynodrel, the main ingredient in Enovid, and norethindrone, used in the other contraceptive pills now marketed in the U.S. and by various manufacturers around the world.

From Time Magazine Archive

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023