: a nitrogenous steroid derivative C23H36N2O2 that is used especially to treat symptoms of benign prostatic hyperplasia and to increase hair growth in male-pattern baldness

Examples of finasteride in a Sentence

Recent Examples on the Web
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Treatment for men often involves medications like finasteride and minoxidil to slow genetic hair loss. — Nicole Hernandez, USA Today, 3 Apr. 2026 Halas considered medication but decided against finasteride — a drug used to treat symptoms of male-pattern hair loss, according to the Mayo Clinic — because of potential side effects. — Lily Hautau, CNN Money, 30 Mar. 2026 Namely, finasteride can be taken at the same time as T to prevent hair loss. — Quispe López, Them., 24 Oct. 2025 Concerns about finasteride's psychiatric side effects aren't new. — Pranjal Malewar, New Atlas, 18 Oct. 2025 See All Example Sentences for finasteride

Word History

Etymology

fina- (of unknown origin) + testosterone + amide

First Known Use

1989, in the meaning defined above

Time Traveler
The first known use of finasteride was in 1989

Browse Nearby Words

Cite this Entry

“Finasteride.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/finasteride. Accessed 5 Oct. 2026.

Medical Definition

finasteride

noun
: a nitrogenous steroid derivative C23H36N2O2 that is used especially to treat symptoms of benign prostatic hyperplasia and to increase hair growth in male-pattern baldness and that acts by inhibiting the enzymatic conversion of testosterone to dihydrotestosterone see propecia, proscar

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