incombustible
adjective
1. not capable of igniting and burning
Similar word(s): fireproof, flameproof, nonflammable, noncombustible
noun
1. Any substance that is not flammable.
1. not capable of igniting and burning
Similar word(s): fireproof, flameproof, nonflammable, noncombustible
1. Any substance that is not flammable.