noun
1. : a deliquescent solid dicarboxylic acid HOOC(CHOH) 4 COOH that is obtained by oxidation of glucose or its derivatives (as sucrose) by nitric acid and that readily undergoes inner esterification to a lactone — called also glucaric acid
2. : either of two dicarboxylic acids from the other hexoses having the pair of central hydroxyl groups on opposite sides of the molecule similarly to glucose
manno- saccharic acid
ido- saccharic acid
— compare mucic acid