TANNIC
Tan"nic, a.
Defn: Of or pertaining to tan; derived from, or resembling, tan; as, tannic acid. Tannic acid. (Chem.) (a) An acid obtained from nutgalls as a yellow amorphous substance, C14H10O9, having an astringent taste, and forming with ferric salts a bluish-black compound, which is the basis of common ink. Called also tannin, and gallotannic acid. (b) By extension, any one of a series of astringent substances resembling tannin proper, widely diffused through the vegetable kingdom, as in oak bark, willow, catechu, tea, coffee, etc.
TANNIER
Tan"ni*er, n. (Bot.)
Defn: See Tanier.
TANNIGEN
Tan"ni*gen, n. [Tannin + -gen.] (Pharm.)
Defn: A compound obtained as a yellowish gray powder by the action of acetyl chloride or acetic anhydride or ordinary tannic acid. It is used as an intestinal astringent, and locally in rhinitis and pharyngitis.
TANNIN
Tan"nin, n. Etym: [Cf. F. tannin.] (Chem.)
Defn: Same as Tannic acid, under Tannic.
TANNING
Tan"ning, n.
Defn: The art or process of converting skins into leather. See Tan, v. t., 1.