The Collaborative International Dictionary
noncombustible vs combustible incombustible
nonflammable \nonflammable\ adj. Not easily ignited, and burning only slowly if ignited. [Narrower terms: noncombustible (vs. combustible), incombustible] WordNet 1.5]
noncombustible vs combustible incombustible
nonexplosive \nonexplosive\ adj. Not explosive. [Narrower terms: noncombustible (vs. combustible), incombustible] WordNet 1.5]
noncombustible vs combustible incombustible
fire-resistant \fire-resistant\ fire-resisting \fire-resisting\ fire-resistive \fire-resistive\adj. Not able to burn or able to burn only with difficulty. [Narrower terms: noncombustible (vs. combustible), incombustible]
Syn: fireproof.