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taurine

1 American  
[tawr-ahyn, -in] / ˈtɔr aɪn, -ɪn /

adjective

  1. of, relating to, or resembling a bull.

  2. pertaining to the zodiacal sign Taurus.


taurine 2 American  
[tawr-een, -in] / ˈtɔr in, -ɪn /

noun

Chemistry.
  1. a neutral crystalline substance, C 2 H 7 NO 3 S, obtained from bile.


taurine 1 British  
/ ˈtɔːraɪn /

adjective

  1. of, relating to, or resembling a bull

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

taurine 2 British  
/ -rɪn, ˈtɔːriːn /

noun

  1. a derivative of the amino acid, cysteine, obtained from the bile of animals; 2-aminoethanesulphonic acid. Formula: NH 2 CH 2 CH 2 SO 3 H

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of taurine1

From the Latin word taurīnus, dating back to 1605–15. See taur-, -ine 1

Origin of taurine2

First recorded in 1835–45; taur(ocholic) + -ine 2

Explanation

Use the adjective taurine to describe someone or something that resembles a bull, like a big, broad dog lumbering through the dog park. The resemblance to the astrological sign known as "Taurus" is the tipoff to the meaning of taurine: this elegant adjective means "relating to or resembling a bull." In fact, in Latin taurus means "bull." You might describe a football player in a tiny antique shop, bumping against delicate furniture and jostling tea cups, as taurine.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Researchers also observed changes in metabolites such as dihydrouracil and taurine.

From Science Daily • Apr. 4, 2026

Over time, she identified two promising ingredients: forms of taurine, an organic compound commonly sold as a dietary supplement, and ethanolamine, another simple organic molecule.

From Science Daily • Mar. 26, 2026

His riffs leapt from the amplifier and hit the audience square in the chest with taurine force.

From BBC • Jul. 23, 2025

Unfortunately for anyone who wants to live forever, new data casts doubt on the idea that taurine is vital to prevent aging.

From Slate • Jun. 20, 2025

He was of choicest pedigree, but the utter strangeness of the scene turned his taurine wits.

From Spanish Highways and Byways by Bates, Katharine Lee

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