pro·​ges·​tin prō-ˈje-stən How to pronounce progestin (audio)
: progestogen
especially : a synthetic progesterone (such as levonorgestrel)

Examples of progestin in a Sentence

Recent Examples on the Web Though most other birth control pills use progestin and estrogen, progestin-only pills like Opill are often recommended for people who can't take combination pills for health reasons. Nicole Fallert, USA TODAY, 5 Mar. 2024 Other potential methods include a hormonal gel containing progestin and testosterone called Nestorone, being developed by the National Institutes of Health and the nonprofit Population Council, meant to drastically slow sperm production. Devika Rao, theweek, 22 Feb. 2024 The new study found no difference in heart risk, a very low risk of stroke, and an increase in breast cancer risk only in those who took estrogen and progestin at the same time. Alexa Mikhail, Fortune, 2 May 2024 And because the pill includes progestin and not estrogen, there are fewer side effects. TIME, 2 May 2024 See all Example Sentences for progestin 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'progestin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


progest(ational) + -in entry 1, originally as a name for progesterone

Note: The name was introduced by the American gynecologist and biochemist Willard M. Allen (1904-93) in "Physiology of the Corpus Luteum V. The Preparation and Some Chemical Properties of Progestin, a Hormone of the Corpus Luteum which Produces Progestational Proliferation," Amerian Journal of Physiology, vol. 92, issue 1 (February, 1930), pp. 174-88.

First Known Use

1945, in the meaning defined above

Time Traveler
The first known use of progestin was in 1945

Dictionary Entries Near progestin

Cite this Entry

“Progestin.” Dictionary, Merriam-Webster, Accessed 12 Jul. 2024.

Medical Definition


pro·​ges·​tin prō-ˈjest-ən How to pronounce progestin (audio)
: progesterone
especially : a synthetic progesterone (as levonorgestrel)

More from Merriam-Webster on progestin

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