choline

[ koh-leen, kol-een ]

/ ˈkoʊ lin, ˈkɒl in /

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.

Origin of choline

First recorded in 1855–60; chol- + -ine²

Words nearby choline

Chol Hamoed, choli, choliambus, cholic, cholic acid, choline, choline acetyltransferase, choline kinase, cholinergic, cholinergic blockade, cholinergic fiber

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for choline

It is decomposed by alkalies with the formation of choline and trimethylamine.
The Propaganda for Reform in Proprietary Medicines, Vol. 2 of 2|Various
From choline it may be separated by recrystallising the mercuric precipitate from hot water.
Poisons: Their Effects and Detection|Alexander Wynter Blyth
It is a product of the decomposition of choline, betaine, and neuridine, when these substances are distilled with potash.
Poisons: Their Effects and Detection|Alexander Wynter Blyth
An atom of hydrogen from the choline, CH2, group, being replaced by hydroxyl.
Poisons: Their Effects and Detection|Alexander Wynter Blyth

Without the choline, lecithin would be a di-fatty acid derivative of glycero-phosphoric acid.
The Chemistry of Plant Life|Roscoe Wilfred Thatcher

British Dictionary definitions for choline

choline

/ (ˈkəʊliːn, -ɪn, ˈkɒl-) /

noun

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:[(CH 3) 3 NCH 2 CH 2 OH] + OH –

Word Origin for choline

C19: from chole- + -ine ², so called because of its action in the liver

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

Medical definitions for choline

choline

[ 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.

Scientific definitions for choline

choline

[ kō′lēn′ ]

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.

单词	choline
释义	choline [ koh-leen, kol-een ] / ˈkoʊ lin, ˈkɒl in / 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. Origin of choline First recorded in 1855–60; chol- + -ine² Words nearby choline Chol Hamoed, choli, choliambus, cholic, cholic acid, choline, choline acetyltransferase, choline kinase, cholinergic, cholinergic blockade, cholinergic fiber Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for choline It is decomposed by alkalies with the formation of choline and trimethylamine. The Propaganda for Reform in Proprietary Medicines, Vol. 2 of 2\|Various From choline it may be separated by recrystallising the mercuric precipitate from hot water. Poisons: Their Effects and Detection\|Alexander Wynter Blyth It is a product of the decomposition of choline, betaine, and neuridine, when these substances are distilled with potash. Poisons: Their Effects and Detection\|Alexander Wynter Blyth An atom of hydrogen from the choline, CH2, group, being replaced by hydroxyl. Poisons: Their Effects and Detection\|Alexander Wynter Blyth Without the choline, lecithin would be a di-fatty acid derivative of glycero-phosphoric acid. The Chemistry of Plant Life\|Roscoe Wilfred Thatcher British Dictionary definitions for choline choline / (ˈkəʊliːn, -ɪn, ˈkɒl-) / noun 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:[(CH 3) 3 NCH 2 CH 2 OH] + OH – Word Origin for choline C19: from chole- + -ine ², so called because of its action in the liver 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 Medical definitions for choline choline [ 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. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for choline choline [ kō′lēn′ ] 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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