Definition of choline in English:
 choline
noun ˈkəʊliːnˈkəʊlɪnˈkōlēn
mass nounBiochemistry A strongly basic compound important in the synthesis and transport of lipids in the body.
Chemical formula: HON(CH₃)₃CH₂CH₂OH
 Example sentencesExamples
-  Betaine is produced in the body by oxidation of choline, another trimethylated, methyl-donating compound.
 -  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.
 -  Inside our bodies, the B vitamins folate and choline work in a delicate balance.
 -  It is the main functional constituent of the natural surfactants, and the body's foremost reservoir of choline, an essential nutrient.
 
Origin
  
Mid 19th century: coined in German from Greek kholē 'bile'.