noncombustible

[non-kuh m-buhs-tuh-buh l]

adjective

not flammable.

noun

a noncombustible substance.

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. 2019