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A prefix, from L. dexter, meaning, pertaining to, or toward, the right; (Chem. & Opt.)

te constitution), are yet physically different, as in their action on polarized light, as dextro- and lævo-tartaric acids. In such compounds there is usually at least one unsymmetrical carbon atom. See Unsymmetrical.

calico printing, photography, etc., and also as a substitute for lemon juice. Called also dextro-tartaric acid. (b) By extension, any one of the series of isomeric acids (racemic acid, levotartaric acid, inactive tartaric acid) of which tartaric acid proper is the type.