tes·​tos·​ter·​one | \ te-ˈstä-stə-ˌrōn How to pronounce testosterone (audio) \

Definition of testosterone

1 : a hormone that is a hydroxy steroid ketone C19H28O2 produced especially by the testes or made synthetically and that is responsible for inducing and maintaining male secondary sex characters
2 : qualities (such as brawn and aggressiveness) usually associated with males : manliness

Examples of testosterone in a Sentence

Recent Examples on the Web Your testosterone can rise in victory or fall in defeat. The Enquirer, 16 Dec. 2021 And lower circulating testosterone levels may affect your ability to initiate and maintain erects function too. Bruce Y. Lee, Forbes, 12 Dec. 2021 His testosterone and good cholesterol were up, his heart rate and bad cholesterol were down, his eyesight was keener. Margaret Talbot, The New Yorker, 11 Aug. 2021 In weightlifting, transgender women must show their testosterone is below a certain level after transitioning, a requirement which Hubbard met. Time, 3 Aug. 2021 The baseline for who has what level of testosterone is so outdated; there's not really current information. Bella Cacciatore, Glamour, 2 Dec. 2021 People have homed in on the idea of testosterone being it factor for sports. Ann Killion, San Francisco Chronicle, 4 Aug. 2021 Though much of the scientific community believes testosterone is the primary reason for the performance gap between men and women in many sports, some remain skeptical. David Wharton, Los Angeles Times, 2 Aug. 2021 Hero is warier of this crew than Sam, who gladly takes the testosterone — and prescription pills — that Hero has procured from the pharmacy. Nick Schager, EW.com, 4 Oct. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'testosterone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of testosterone

1935, in the meaning defined at sense 1

History and Etymology for testosterone

testis + -o- + -sterone

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Time Traveler for testosterone

Time Traveler

The first known use of testosterone was in 1935

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Dictionary Entries Near testosterone



test pattern

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Statistics for testosterone

Last Updated

27 Dec 2021

Cite this Entry

“Testosterone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/testosterone. Accessed 23 Jan. 2022.

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More Definitions for testosterone



English Language Learners Definition of testosterone

: a substance (called a hormone) that occurs naturally in men and male animals
: qualities (such as noticeable strength and aggressiveness) that agree with traditional ideas about what men are like


tes·​tos·​ter·​one | \ te-ˈstäs-tə-ˌrōn How to pronounce testosterone (audio) \

Medical Definition of testosterone

: a male hormone that is a crystalline hydroxy steroid ketone C19H28O2 produced primarily by the testes or made synthetically and that is the main androgen responsible for inducing and maintaining male secondary sex characteristics — see androgel, axiron

More from Merriam-Webster on testosterone

Nglish: Translation of testosterone for Spanish Speakers

Britannica English: Translation of testosterone for Arabic Speakers

Britannica.com: Encyclopedia article about testosterone


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