adicarbonicdī`kär*bŏn"ĭk(Chem) Containing two carbon residues, or two carboxyl groups or radicals; as, oxalic acid is the simplest dicarbonic acid. In the latter sense, synonymous with dicarboxylic; as, succinic acid is a dicarboxylic acid.
Century Dictionary and Cyclopedia
dicarbonicContaining two carbonic-acid radicals, — O.CO.OH, in the molecule. Sometimes incorrectly used for dicarboxylic.