WordReference Random House Unabridged Dictionary of American English © 2026
carbon′ic ac′id, 
  1. Chemistrythe acid, H2CO3, formed when carbon dioxide dissolves in water, known in the form of its salts and esters, the carbonates.
  • 1785–95

Collins Concise English Dictionary © HarperCollins Publishers::
carbonic acid n
  1. a weak acid formed when carbon dioxide combines with water: obtained only in aqueous solutions, never in the pure state. Formula: H2CO3
'carbonic acid' also found in these entries (note: many are not synonyms or translations):
bicarbonate - carbon dioxide - carbonic-acid gas - carbonate - absorb - carbonic - polycarbonate

Forum discussions with the word(s) "carbonic acid" in the title:


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