Definition of choline in English:

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Pronunciation: /ˈkōlēn/


A strongly basic compound occurring widely in living tissues and important in the synthesis and transport of lipids.
  • Chemical formula: HON(CH3)3CH2CH2OH
Example sentences
  • Found in various forms throughout the body, choline, a member of the vitamin B complex family, is involved in the creation of cell membranes.
  • Inside our bodies, the B vitamins folate and choline work in a delicate balance.
  • Betaine is produced in the body by oxidation of choline, another trimethylated, methyl-donating compound.


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

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