Definition of choline in English:



mass nounBiochemistry
  • A strongly basic compound important in the synthesis and transport of lipids in the body.

    Chemical formula: HON(CH₃)₃CH₂CH₂OH

    • ‘It is the main functional constituent of the natural surfactants, and the body's foremost reservoir of choline, an essential nutrient.’
    • ‘Found in various forms throughout the body, choline, a member of the vitamin B complex family, is involved in the creation of cell membranes.’
    • ‘In spinach and sugar beet the enzymes responsible for converting choline into betaine have been characterized, and the corresponding genes cloned and sequenced.’
    • ‘Betaine is produced in the body by oxidation of choline, another trimethylated, methyl-donating compound.’
    • ‘Inside our bodies, the B vitamins folate and choline work in a delicate balance.’


Mid 19th century: coined in German from Greek kholē ‘bile’.