: 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
Eggs contain choline, which supports brain development and function, especially in pregnancy and childhood.
—
Irene Coltrinari, Vogue, 25 Apr. 2025
Apples also contain small amounts of vitamins A, E, and K, plus copper, choline, zinc, manganese, and other vital nutrients your body needs.
Side Effects and Risks
Allergies and Sensitivities
Some people may be allergic to apples and should avoid eating them.
—Brittany Lubeck, Ms, Rdn, Verywell Health, 17 Mar. 2025
Eggs contain impressive amounts of choline, folate, vitamin D, iodine, and B vitamins.
—Chelsea Rae Bourgeois, Rdn, Health, 13 Mar. 2025
Specifically, whole eggs contain vitamins A, B12, and choline, whereas egg whites contain little to none.4
Low in Calories and Fat
Eggs are relatively low in calories and fat, even with the yolk.
—Jonathan Purtell, Verywell Health, 6 Mar. 2025
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Irene Coltrinari, Vogue, 25 Apr. 2025
Apples also contain small amounts of vitamins A, E, and K, plus copper, choline, zinc, manganese, and other vital nutrients your body needs.
Side Effects and Risks
Allergies and Sensitivities
Some people may be allergic to apples and should avoid eating them.
—Brittany Lubeck, Ms, Rdn, Verywell Health, 17 Mar. 2025
Eggs contain impressive amounts of choline, folate, vitamin D, iodine, and B vitamins.
—Chelsea Rae Bourgeois, Rdn, Health, 13 Mar. 2025
Specifically, whole eggs contain vitamins A, B12, and choline, whereas egg whites contain little to none.4
Low in Calories and Fat
Eggs are relatively low in calories and fat, even with the yolk.
—Jonathan Purtell, Verywell Health, 6 Mar. 2025
See All Example Sentences for choline
Cite this Entry
“Choline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/choline. Accessed 29 Apr. 2025.
Copy CitationKids Definition
choline
noun
cho·line
ˈkō-ˌlēn 
: a vitamin of the vitamin B complex that is widely distributed in animal and plant products (as eggs and beans) and is necessary for the activities of the liver
Medical Definition
choline
noun
cho·line
ˈkō-ˌlēn
: 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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