carbonite noun3 •An explosive manufactured from a variety of materials, including nitroglycerine, wood meal and nitrates.He was pleased with bellite, he found that carbonite made more fumes than bellite, but the explosive he liked best was ammonite. — 1898 •An explosive composed of nitrobenzene, saltpetre, sulfur, and kieselguhr. •A naturally occurring carbonaceous material formed from coal, natural coke. formscarbonites