- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for choline
Betaine and choline often occur together in the germs of many plants.The Chemistry of Plant Life
Roscoe Wilfred Thatcher
The variations include the alcohol, to which the fatty acids and choline phosphate are attached.
An atom of hydrogen from the choline, CH2, group, being replaced by hydroxyl.
It is decomposed by alkalies with the formation of choline and trimethylamine.
From choline it may be separated by recrystallising the mercuric precipitate from hot water.
- 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 –
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
- 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.
- 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.