Incombustible
Incombustible , adjective
[Prefix in- not + combustible: compare French incombustible.]
Not combustible; not capable of being burned, decomposed, or consumed by fire; uninflammable; as, asbestus is an incombustible substance; carbon dioxide is an incombustible gas.
Collocations (1)
Incombustible cloth , a tissue of amianthus or asbestus; also, a fabric imbued with an incombustible substance.