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

Universally beloved, eggs are packed with nutrients such as protein, minerals, and choline, which are good for the brain, as well as antioxidants like lutein and zeaxanthin, which are beneficial for eye health. — Alessandra Signorelli, Vogue, 23 July 2026

This yellow interior contains much of that choline along with vitamin D, says Zumpano. — Kathleen Felton, Time, 9 June 2026

Eggs may promote greater fullness due to their higher fat content and provide nutrients such as choline, vitamin A, and selenium. — Christina Manian, Health, 3 June 2026

Eggs are a good source of choline, folate, vitamin D, iodine, and B vitamins. — Sohaib Imtiaz, Verywell Health, 27 May 2026

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