Meaning of incombustible

in•com•bus•ti•ble

Pronunciation: (in"kum-bus'tu-bul), [key]
— adj.
  1. not combustible; incapable of being burned; fireproof.
—n.
  1. an incombustible substance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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