dicarbonic \di`car*bon"ic\ (d[imac]`k[aum]r*b[o^]n"[i^]k), a.
[Pref. di- + carbonic.] (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.
[1913 Webster +PJC]