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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

There is also evidence that adding taurine back into your body as a supplement may improve some of the problems that come with aging.

From Slate • Jun. 20, 2025

In 1864 the number of places in all the taurine establishments of Spain was 509,283, of which 246,813 belonged to the cities, and 262,470 to the country.

From Castilian Days by Hay, John

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