carbonific UK /ˌkɑː.bəˈnɪf.ɪk/US /ˌkɑɹ.bəˈnɪf.ɪk/adjective 1noun 1forms 1 adjective1 •Decomposing to create a greater volume of carbon than the volume of the original materialThe coating contains a carbonific compound that reacts with the intumescent catalyst to form a carbon residue, and a spumific compound that decomposes to produce large quantities of gas. — 1978 noun1 •A compound that decomposes to produce a mass of carbon with a greater volume than the original compound.The resultant acid reacts with the carbonific. — 1977 formscarbonifics
