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[non-kuh m-buhs-tuh-buh l]
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  1. not flammable.
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  1. 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

Related Words


Examples from the Web for non-combustible

Historical Examples

  • For five miles they had laid a blanket of non-combustible gases.

    The Hammer of Thor

    Charles Willard Diffin

  • Asbestos is merely a non-combustible material in which air may be entrapped, but, when non-porous, is a good conductor of heat.

  • The whole of the building to be composed of non-combustible materials, such as iron, stone, or bricks.

  • This will not apply to concealed work in walls or ceilings composed of concrete, tile or other non-combustible material.

  • Must be made entirely of non-combustible materials, except such minor parts as handles, magnet insulation, etc.

Word Origin and History for non-combustible


also noncombustible, 1804, from non- + combustible.

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Online Etymology Dictionary, © 2010 Douglas Harper