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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

Modified taurine is nontoxic but creates a slightly cloudy appearance.

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

It also renders all those taurine supplements dubious, because there’s no clear data here showing that you want more of the amino acid in your body.

From Slate • Jun. 20, 2025

The step up that the rector had promised himself for Easter was effected without an apoplexy from Mr. Kingdon, possibly because the white stole did not inflame his taurine eye.

From The Vanity Girl by MacKenzie, Compton

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