Definition of alkannin in English:

alkannin

Pronunciation /alˈkanɪn/

noun

(also alcanine)
Chemistry
  • A red colouring matter obtained from the root of certain plants of the family Boraginaceae, especially alkanet (Alkanna tinctoria), and used as a food colouring and in cosmetics.

    Systematic name: 5,8-dihydroxy-2-[1-hydroxy-4-methylpent-3-enyl]naphthalene-1,4-dione; C₁₆H₁₆O₅.

Origin

Mid 19th century. From German Alcannin, Alkannin from Alcanna, Alkanna + -in.