/ Dictionary / Index C carbonic-acid gas: Meaning and Definition of Find definitions for: car•bon'ic-ac'id gas" Pronunciation: (kär-bon'ik as'id). [key] SeeAlso called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. carbonic acid carbonic anhydrase Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language