Any salt or ester of carbonic acid.

(transitive) To charge (often a beverage) with carbon dioxide.

(chemistry) A fine black powder of amorphous carbon manufactured by the incomplete combustion of natural gas or oil, and used as a pigment in the manufacture of ink and paint. Used as a filler in rubber like polymers and rubber. It helps the polymers resist deterioration by ultraviolet rays.

(organic chemistry, nutrition) A sugar, starch, or cellulose that is a food source of energy for an animal or plant.

Containing carbon dioxide gas under pressure, especially pertaining to beverages, as natural mineral water or man-made drinks.

simple past tense and past participle of carbonate

(inorganic chemistry) The normal oxide of carbon, CO₂; a colorless, odorless gas formed during respiration and combustion and consumed by plants during photosynthesis.

(dated, organic chemistry) phenol (C₆H₅OH)

A weak unstable acid, H₂CO₃, known only in solution, and as carbonate salts; it is present in carbonated drinks, and sparkling wine, but decomposes to form carbon dioxide and water.

(geology) Of a geologic period within the Paleozoic era; comprises the lower, middle and upper Mississippian and lower, middle and upper Pennsylvanian epochs from about 345 to 280 million years ago, when coal was laid down.