​TINCTURE (Fr. teintnre, Lat. tinctnra, tingere, to dye, stain), the colour with which a substance is dyed; hence, metaphorically, distinctive character or quality. The term is used in heraldry of the metals, argent, or, of the colours, gules, aznre, sable, vert, &c., or of the furs, errnine, wir, &c. Since the 16th century a conventional arrangement of lines and dots givesthe equivalents of these tinctures in black and white (see HERALDRY). In medicine, a tincture is a fluid solution of the essential properties of some substance, animal, vegetable or mineral; the menstruum being either alcohol, ether or ammonia; the various kinds are accordingly distinguished as alcoholic, etherial or ammonia ted tinctures.