gallo-tannin
(gæləʊˈtænɪn)
[f. as prec. + tannin.]
Tannin prepared from nut-galls.
| 1891 Anthony's Photogr. Bull. IV. 128 Gallo-tannin (the ordinary tannin) produces a similar blue black coloration. |
gallo-tannin
(gæləʊˈtænɪn)
[f. as prec. + tannin.]
Tannin prepared from nut-galls.
| 1891 Anthony's Photogr. Bull. IV. 128 Gallo-tannin (the ordinary tannin) produces a similar blue black coloration. |
Oxford English Dictionary