Cream of tartar

Definition of Cream of tartar

(Chem.)	purified tartar or argol; so called because of the crust of crystals which forms on the surface of the liquor in the process of purification by recrystallization. It is a white crystalline substance, with a gritty acid taste, and is used very largely as an ingredient of baking powders; - called also potassium bitartrate, acid potassium tartrate, etc.
(Chem.)	See under Cream.

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