creatine

noun

cre·​a·​tine ˈkrē-ə-ˌtēn 

-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

In addition to being high in creatine, herring is packed with other important nutrients, including protein, vitamin D, iodine, selenium, and vitamin B12. — Jillian Kubala, HEALTH, 15 Sep. 2026

Women are taking creatine and assessing their vaginal health. — Rachael Akhidenor, Vogue, 11 Sep. 2026

There are safer alternatives with a more solid evidence base—such as creatine. — Lori Youmshajekian, Scientific American, 1 Sep. 2026

Ingredients such as creatine and beta-alanine generally work through consistent use over time, not by getting into your system as quickly as possible. — Dr. Onaola Adedeji, ABC News, 13 Aug. 2026

Word History

Etymology

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

First Known Use

1840, in the meaning defined above

Phrases Containing creatine

• creatine kinase
• creatine phosphate

Rhymes for creatine

• aten
• clayton
• satan
• statin
• straighten

Medical Definition

creatine

noun

cre·​atine ˈkrē-ə-ˌtēn, -ət-ᵊn 

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