choline

noun

cho·​line ˈkō-ˌlēn 

: 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

Tuesday, the supplement brand is announcing its latest clinical trial on its Prenatal Multivitamin, $39, a capsule supplement available in a mint or citrus essence formulated with 12 essential nutrients like biotin, choline and DHA. —Emily Burns, Footwear News, 3 Sep. 2019

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

Word History

Etymology

International Scientific Vocabulary

First Known Use

circa 1871, in the meaning defined above

Kids 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