creatine

noun

cre·​a·​tine ˈkrē-ə-ˌtēn How to pronounce creatine (audio)
-tᵊn
: a white crystalline nitrogenous substance C4H9N3O2 found especially in the muscles of vertebrates either free or as phosphocreatine
also : a synthetic usually hydrated form of creatine taken especially as a dietary supplement

Examples of creatine in a Sentence

Recent Examples on the Web
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In one small study, individuals with depression saw improvement with 3 to 5 grams of daily creatine, but individuals with bipolar disorder saw symptoms worsen. Angelica Stabile, FOXNews.com, 11 Oct. 2025 The Gay Grim Reaper knocks at your 28-year-old door with a scythe in one hand and a tub of creatine in the other. Samantha Allen, Them., 10 Oct. 2025 Tips to Maximize Your Results To maximize your results, pair your creatine consumption with a resistance training regimen that has enough intensity and frequency to promote future strength gains. Sherri Gordon, Health, 1 Oct. 2025 While your body naturally produces some creatine, can maximizing on it really deliver the benefits influencers are claiming? Brittney Melton, NPR, 5 Sep. 2025 See All Example Sentences for creatine

Word History

Etymology

French créatine, from Greek kreat-, kreas flesh — more at raw

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of creatine was in 1840

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Cite this Entry

“Creatine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/creatine. Accessed 20 Oct. 2025.

Medical Definition

creatine

noun
: a white crystalline nitrogenous substance C4H9N3O2 found especially in vertebrate muscle either free or as phosphocreatine

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