transitive. To charge or impregnate (esp. a liquid or drink) with carbon dioxide.

transitive. Chiefly Metallurgy. To cause to react with carbon; to carburize. Now rare.

transitive. To cause to combine with or incorporate carbon or a carbon compound; esp. to add carbon to (wrought iron) in making cement steel.

transitive. To combine or impregnate (a substance) with carbon or its compounds; esp. to enrich (a fuel or fuel–air mixture) with hydrocarbons.