D defs.my
Entry 1 sense Webster, 1913

dicarbonic

/(dī`kär*bŏn"ĭk)/ · di·car·bon·ic · IPA
01 a. Containing two carbon residues, or two carboxyl groups or radicals; as, oxalic acid is the simplest dicarbonic acid. In the latter sense, …
  1. 1.
    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.(Chem.) Also: dicarboxylic, dicarboxylic