01 a. Not combustible; not capable of being burned, decomposed, or consumed by fire; uninflammable; as, asbestus is an incombustible substance; c…
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1.
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.
Phrases & compounds
Incombustible cloth —
a tissue of amianthus or asbestus; also, a fabric imbued with an incombustible substance.