carbonation

from The Century Dictionary.

• noun The act or process of causing combination with carbonic acid; specifically, a process of defecating beet-, sorghum-, or cane-juice by the addition of milk of lime, and subsequently precipitating the lime as carbonate by leading into the solution a stream of carbonic-acid gas. Also carbonatation.
• noun In the Leblanc process for the manufacture of carbonate of soda, the treatment with carbon-dioxid gas of the crude liquor obtained by leaching the black ash, or, after evaporation of this crude liquor to dryness, the roasting of the residue, to which sawdust has been added. The object of the process is the conversion of some caustic soda and sodium sulphid present into sodium carbonate.
• noun In petrography, the union of carbonic acid and a base, or the substitution of carbonic acid for another combined acid, in either case producing carbonates.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The state of having carbon dioxide gas dissolved in a liquid.
• noun The amount or level of dissolved carbon dioxide remaining in solution.
• noun Carbonization.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun saturation with carbon dioxide (as soda water)