tau·​rine | \ ˈtȯ-ˌrīn \

Definition of taurine

 (Entry 1 of 2)

: of or relating to a bull : bovine


tau·​rine | \ ˈtȯ-ˌrēn \

Definition of taurine (Entry 2 of 2)

: a crystalline acid C2H7NO3S that is synthesized in the body from cysteine and methionine, is similar to amino acids but is not a component of proteins, and is involved in various physiological functions (such as bile acid conjugation and cell membrane stabilization)

Examples of taurine in a Sentence

Recent Examples on the Web: Noun

Four Loko does not contain caffeine, taurine or guarana. Carolyn L. Todd, SELF, "What Actually Happens When You Combine Alcohol and Caffeine?," 29 June 2018 The heart muscle, specifically, supplies critical amino acids like carnitine and taurine. + Chicken gizzards. Marygrace Taylor, Good Housekeeping, "4 Holistic Vets Reveal Exactly What They Feed Their Dogs," 5 Apr. 2017 Her venom is packed with GABA and two other compounds that also activate the same chloride receptors, β-alanine and taurine. Christie Wilcox, Scientific American, "How a Wasp Turns Cockroaches into Zombies," 1 May 2017 Coco Loco contains cacao powder as well as ingredients often found in energy drinks, including taurine, guarana, and ginkgo biloba. Ars Technica, SELF, "The FDA Is Not Cuckoo for Coco Loko, a Chocolatey Alternative to Snorting Cocaine," 14 Dec. 2017 When brands like Monster Energy and Rockstar launched in the early 2000s, promising sky-high levels of caffeine and other power-you-through agents like the amino acid taurine, they were positioned as frat-party staples. Marie Claire, "Rethink the Pink Drink," 16 Sep. 2013 For example, anything with caffeine, such as caffeinated soda and coffee, sports products such as bars, gels and sports drinks, along with creatine, guarana, root and taurine are banned. Alec Johnson, Milwaukee Journal Sentinel, "Pewaukee middle, high school students enjoying new mountain biking program," 29 Sep. 2017 The New York Post reports that Coco Loko contains ginkgo biloba, taurine, and guarana, as well as cacao powder. Nick Thieme, Slate Magazine, "You Can Now Buy Chocolate Powder to Snort," 12 July 2017 Chad Mahler said the Charolais heifer is a breed of taurine beef cattle from the Charolais region in eastern France. Linda Girardi, Aurora Beacon-News, "Cool weather a nice change for 25th annual Kendall fair, organizers say," 5 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'taurine.' 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 taurine


1613, in the meaning defined above


1845, in the meaning defined above

History and Etymology for taurine


Latin taurinus, from taurus bull; akin to Greek tauros bull, Middle Irish tarb


International Scientific Vocabulary, from Latin taurus; from its having been discovered in ox bile

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The first known use of taurine was in 1613

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tau·​rine | \ ˈtȯ-ˌrēn \

Medical Definition of taurine

: a colorless crystalline acid C2H7NO3S that is synthesized in the body from cysteine and methionine, is similar to amino acids but is not a component of proteins, and is involved in various physiological functions (as bile acid conjugation and cell membrane stabilization)

More from Merriam-Webster on taurine

Rhyming Dictionary: Words that rhyme with taurine

Britannica.com: Encyclopedia article about taurine

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