noncombustible

[non-kuh m-buhs-tuh-buh l]

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adjective

not flammable.

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noun

a noncombustible substance.

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Origin of noncombustible

First recorded in 1965–70; non- + combustible

Related formsnon·com·bus·ti·bil·i·ty, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018