Pharm. [L. TANNI(N + -GEN.] A compound of tannin and acetyl, used as an intestinal astringent; acetyl-tannin.
1898. in Syd. Soc. Lex.
1905. H. D. Rolleston, Dis. Liver, 297. If this [diarrhœa] is troublesome, bismuth, aromatic chalk and opium mixture, dilute sulphuric acid, tannigen should be given.