aldaric acids

Polyhydroxy dicarboxylic acids having the general formula HOC(=O)[CH(OH)]nC(=O)OH , formally derived from an aldose by oxidation of both terminal carbon atoms to carboxyl groups.
PAC, 1995, 67, 1307 (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1312
White Book, p. 142