TARTAR n. 6 definitions
A reddish crust or sediment in wine casks, consisting essentially of crude cream of tartar, and used in marking pure cream of tartar, tartaric acid, potassium carbonate, black flux, etc., and, in dyeing, as a mordant for woolen goods; -- called also argol, wine stone, etc.
TARTARIC a.
Of or pertaining to tartar; derived from, or resembling, tartar. Tartaric acid. (a) An acid widely diffused throughout the vegetable kingdom, as in grapes, mountain-ash berries, etc., and obtained from tartar as a white crystalline substance, C2H2(OH)2.(CO2H)2, having a strong pure acid taste. It is used in medicine, i…