Definition of aloin in English:

aloin

(also aloine)

noun

Chemistry
  • Any of several organic compounds isolated from the sap of aloes; (in later use) specifically an anthraquinone which forms bitter-tasting lemon-yellow crystals and has purgative and cathartic effects.

Origin

Early 19th century; earliest use found in Constantine Rafinesque (1783–1840). Originally from German Aloine from Aloe + -ine.

Pronunciation

aloin

/ˈaləʊɪn/