Webster's English Dictionary

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carbonate

1. car.bon.ate \'ka:r-b*-.na-t, -n*t\ n : a salt or ester of carbonic acid 
2. car.bon.ate \-.na-t\ \.ka:r-b*-'na--sh*n\ vt 1: to convert into a 
   carbonate  2: to impregnate with carbon dioxide {carbonated beverage}  - 
   car.bon.ation n