choline(redirected from Vitamin J)
Also found in: Thesaurus, Medical, Encyclopedia.
A natural amine, C5H15NO2, often classed in the vitamin B complex, that is a constituent of lecithin and other phospholipids and is a precursor of certain biologically important molecules, such as acetylcholine.
choline(ˈkəʊliːn; -ɪn; ˈkɒl-)
(Biochemistry) a colourless viscous soluble alkaline substance present in animal tissues, esp as a constituent of lecithin: used as a supplement to the diet of poultry and in medicine for preventing the accumulation of fat in the liver. Formula:[(CH3)3NCH2CH2OH]+OH–
[C19: from chole- + -ine2, so called because of its action in the liver]
cho•line(ˈkoʊ lin, ˈkɒl in)
a viscous fluid, C5H14N + O, that is a constituent of lecithin and a primary component of the neurotransmitter acetylcholine: one of the B complex vitamins.
[1865–70; < German Cholin (1862) < Greek chol(ḗ) bile + -in -ine2]