• Webster's Revised Unabridged Dictionary
    • a dicarbonic dī`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.
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Century Dictionary and Cyclopedia
    • dicarbonic Containing two carbonic-acid radicals, — O.CO.OH, in the molecule. Sometimes incorrectly used for dicarboxylic.
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Webster's Revised Unabridged Dictionary
Pref. di-, + carbonic,