carbonated UK /ˈkɑː(ɹ)bɒneɪtəd/US /ˈkɑɹ.bəˌneɪ.təd/adjective 2forms 2phrases 1 adjective2 •Containing carbon dioxide gas under pressure, especially pertaining to beverages, as natural mineral water or man-made drinks.Soda pop, lemon soda and soda water are carbonated drinks. Champagne and beer are naturally carbonated through fermentation. •Containing calcium carbonate, often as a result of mineral carbonation. formsmore carbonated · most carbonated Phrases with carbonated carbonated waterWater that contains carbon dioxide dissolved in it under pressure and is intended for drinking.