Definition of "carbonic" [car•bon•ic]

• Of or relating to carbon. (adjective)

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• "All limestones contain a great deal of this gas which issues from the candle, and which we call carbonic acid."
• "KRULWICH: And then he did it again - a week later with a gas he called carbonic acid."
• "When CO2 is produced during respiration, an enzyme called carbonic anhydrase turns it into biocarbonate for easy transportation into the lungs."