Chem. Formerly also flavine. [f. L. flāv-us yellow + -IN.] A yellow dye-stuff prepared from quercitron bark.
1853. Napier, Art Dyeing, 344. Flavine.
1864. Watts, Dict. Chem., II. 655. Flavin.
1886. Encycl. Brit., XX. 175/2. From 100 parts of quercitron about 85 of flavin are obtained, having a tinctorial power more than twice that of the original bark.
