cho·​line | \ ˈkō-ˌlēn How to pronounce choline (audio) \

Definition of choline

: a basic compound C5H14NO that is found in various foods (such as egg yolks and legumes) or is synthesized in the liver, that is a component of lecithin and a precursor of acetylcholine, and that is essential to the metabolism of fat in the liver and is usually included in the vitamin B complex

Examples of choline in a Sentence

Recent Examples on the Web CarryOn aims to offer more functional benefits by blending CBD with ingredients of choline, L-theanine, and vitamins C and E, while keeping its products under 10 calories and two grams of sugar per serving. Rachel King, Fortune, "The soda market is popping with new contenders. Will they stay or fizzle out?," 5 June 2020 The veggie’s choline, roughly 10% of the daily goal per cup, plays a role in sleep, memory, and learning and muscle movement. Cynthia Sass, Mph,, "Cauliflower Benefits: 7 Ways This Vegetable Helps Your Health," 23 Oct. 2019 Aimed to improve mental performance, Respawn drinks are sugar-free and made with 95 milligrams of caffeine, along with B vitamins, choline, green tea extract and ground ginger. Mike Snider, USA TODAY, "Video game accessories let you fine tune the feel, sound and seat of your game," 13 Aug. 2019 Whole eggs are also a good source of choline (one egg yolk has about 300 micrograms), an important B vitamin that helps regulate the brain, nervous system, and cardiovascular system. SELF, "19 Healthy, High-Fat Foods to Keep You Full and Satisfied," 8 Aug. 2019 These range from protein to zinc, iron, choline, folate, iodine, vitamin A, vitamin D, vitamin B6, and vitamin B12. Valerie Sweeten, Houston Chronicle, "Healthy meals involve preplanning, interaction," 31 July 2019 Both provide bonus antioxidants and key nutrients, like vitamin D and choline in egg yolk, and vitamins E, K, and magnesium in avocado. Cynthia Sass, Mph,, "7 Healthy Late-Night Snacks," 3 July 2019 Eggs are also a very good source of choline, an essential nutrient that protects against cognitive impairment and fatty liver. WSJ, "Are Eggs Bad for You? Two Scientists Square Off," 13 Sep. 2018 Americans typically don’t consume the daily required intake for choline, thus egg consumption would alleviate this problem. WSJ, "Are Eggs Bad for You? Two Scientists Square Off," 13 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'choline.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of choline

circa 1871, in the meaning defined above

History and Etymology for choline

International Scientific Vocabulary

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The first known use of choline was circa 1871

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Last Updated

25 Jun 2020

Cite this Entry

“Choline.” Dictionary, Merriam-Webster, Accessed 2 Jul. 2020.

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More Definitions for choline


cho·​line | \ ˈkō-ˌlēn How to pronounce choline (audio) \

Medical Definition of choline

: a basic compound C5H14NO that is found in various foods (as egg yolk and legumes) or is synthesized in the liver and that is a component of lecithin, is a precursor of acetylcholine, and is essential to liver function

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