gallo-tannic, a.
(ˌgæləʊˈtænɪk)
[f. gallo-, taken as comb. form of L. galla gall n.3 + tannic.]
In gallo-tannic acid, tannic acid prepared from nut-galls.
| 1858 in Simmonds Dict. Trade. 1873 Fownes' Chem. (ed. 11) 640 Gallotannic acid C27H22O17, the acid contained in the gall-nuts of Quercus infectoria and other species of oak. |