gallic, a.2 Chem.
(ˈgælɪk)
[ad. F. gallique, f. L. galla (= F. galle gall n.3): see -ic.]
Only in gallic acid: a crystalline acid prepared from the oak-gall and other vegetable products.
| 1791 Hamilton tr. Berthollet's Dyeing I. i. i. v. 74 To which the name of gallic acid has been given from galls. 1800 tr. Lagrange's Chem. II. 86 Red sulphate of iron..is precipitated black by the gallic acid. 1883 Hardwich's Photogr. Chem. (ed. Taylor) iv. 117 On..brushing with a solution of Gallic Acid, a manifest difference will be observed. |