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

Female Marines were injured at more than six times the rate of men during preliminary training—unsurprising, since men’s higher testosterone levels produce stronger bones and muscles. Heather Mac Donald, WSJ, "Women Don’t Belong in Combat Units," 13 Jan. 2019 The substance used in the study, DMAU, has properties similar to both androgens, such as testosterone, and progestins, such as progesterone. Mark Lieber, CNN, "Male birth control pill one step closer to reality, researchers say," 20 Mar. 2018 The Academy of Motion Picture Arts and Sciences is still mostly comprised of men, which means testosterone-laden films get the most Oscar buzz. Christopher Rosa, Glamour, "Lady Gaga Didn't Need A Star Is Born to Be Taken Seriously," 28 Sep. 2018 Genetics preclude a level playing field, and not just because some female athletes have more naturally occurring testosterone in their bodies. Ken Goe, OregonLive.com, "Kelly Sullivan returns to Oregon State as Seattle U's coach: Oregon track & field rundown," 28 Apr. 2018 Some readers dismiss Gilbert's bid to build the city's tallest building as pure ego, just male testosterone at work. John Gallagher, Detroit Free Press, "Hudson's site project: Your questions answered," 18 Jan. 2018 The idea is that autism is caused by fetal exposure to higher than normal levels of male hormones, such as testosterone. Maia Szalavitz, Scientific American, "Autism—It's Different in Girls," 1 Mar. 2016 LeVeque suggests users get up and exercise first thing in the morning, since a fasted workout has the same benefits as intermittent fasting, which causes a surge in human growth hormone and testosterone to help burn fat. Kathryn Romeyn, The Hollywood Reporter, "Jennifer Garner's Trainer Launched a Wellness App that Uses Artificial Intelligence," 9 Apr. 2018 These produced testosterone, which her body then converted to estrogen. Asher Fogle, Good Housekeeping, "Falling in Between: Inside the Lives of Intersex Women," 21 Oct. 2016

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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Dictionary Entries near testosterone

test oath




test pattern

test pilot

test pit

Statistics for testosterone

Last Updated

23 Apr 2019

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Time Traveler for testosterone

The first known use of testosterone was in 1935

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English Language Learners Definition of testosterone

medical : a substance (called a hormone) that occurs naturally in men and male animals
informal + often disapproving : 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

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Comments on testosterone

What made you want to look up testosterone? Please tell us where you read or heard it (including the quote, if possible).


not to be persuaded, moved, or stopped

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