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choline

[koh-leen, kol-een]

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noun

Biochemistry. a quaternary ammonium cation, C₅H₁₄N⁺O, one of the B-complex vitamins, found in the lecithin of many plants and animals.

choline hydroxide, C₅H₁₅NO₂, the viscous, strongly alkaline commercial form of this compound, usually synthesized, used as a feed supplement, especially for poultry, and in medicine in certain liver conditions.

choline chloride, C₅H₁₄ClNO.

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Origin:
1855–60; chol- + -ine²

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Choline is always a great word to know.

So is nickel. Does it mean:

Symbol: Pr; atomic weight: 140.907; atomic number: 59

Symbol: Ni; atomic weight: 58.71; atomic number: 28

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Collins

World English Dictionary

choline (ˈkəʊliːn, -ɪn, ˈkɒl-)

—n
	a colourless viscous soluble alkaline substance present in animal tissues, esp as a constituent of lecithin: used as a supplement to the diet of poultry and in medicine for preventing the accumulation of fat in the liver. Formula:[(CH₃)₃NCH₂CH₂OH]⁺OH^--

[C19: from chole- + -ine², so called because of its action in the liver]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage

Medical Dictionary

choline cho·line (kō'lēn')
n.
A natural amine often classed in the vitamin B complex and a constituent of many other biologically important molecules, such as acetylcholine and lecithin.

American Heritage

Science Dictionary

choline

(kō'lēn') Pronunciation Key
A natural amine often classed in the vitamin B complex. It is incorporated into the structure of many other biologically important molecules, such as acetylcholine and lecithin. Chemical formula: C₅H₁₅NO₂.

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