[in-kuh m-buhs-tuh-buh l]
- not combustible; incapable of being burned; fireproof.
- an incombustible substance.
Origin of incombustible
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for incombustible
Carbon dioxide is incombustible, since it is, like water, a product of combustion.An Elementary Study of Chemistry
It is a transparent gas, which is incombustible and extinguishes flame.Elements of Agricultural Chemistry
I think I may say I am old and incombustible enough to be trusted.The Guardian Angel
Oliver Wendell Holmes, Sr.
The fuse wire is usually enclosed in an incombustible holder.Physics
Willis Eugene Tower
It was burned in incombustible flax, with the orange-tree on which it used to perch.Voltaire's Romances
- not capable of being burnt; fireproof
- an incombustible object or material
Word Origin and History for incombustible
Online Etymology Dictionary, © 2010 Douglas Harper