rutin
noun
ru·tin ˈrü-tᵊn 
: a yellow crystalline flavonol glycoside C27H30O16 that occurs in various plants (such as buckwheat and tobacco) and is used in medicine chiefly for strengthening capillary walls
Word History
Etymology
German, from New Latin Ruta, genus that includes rue + German -in -in entry 1
First Known Use
1845, in the meaning defined above
Medical Definition
rutin
noun
ru·tin ˈrüt-ᵊn
: a yellow crystalline flavonol glycoside C27H30O16 that occurs in various plants (as rue, tobacco, and buckwheat), that yields quercetin and rutinose on hydrolysis, and that is used chiefly for strengthening capillary blood vessels (as in cases of hypertension and radiation injury)