• WordNet 3.6
    • adj incombustible not capable of igniting and burning
    • ***
Webster's Revised Unabridged Dictionary
    • a Incombustible Not combustible; not capable of being burned, decomposed, or consumed by fire; uninflammable; as, asbestus is an incombustible substance; carbon dioxide is an incombustible gas.
    • ***
Century Dictionary and Cyclopedia
    • incombustible Not combustible; incapable of being burned or consumed by fire.
    • n incombustible A substance or thing that will not burn, or cannot be consumed by fire.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Incombustible in-kom-bust′i-bl incapable of being consumed by fire
    • ***


Webster's Revised Unabridged Dictionary
Pref. in-, not + combustible,: cf. F. incombustible,


In literature:

This is the incombustible wood put down by Paganel in his list of Australian products.
"In Search of the Castaways" by Jules Verne
I think I may say I am old and incombustible enough to be trusted.
"The Guardian Angel" by Oliver Wendell Holmes, Sr.
This bamboo is incombustible.
"The Social Cancer" by José Rizal
Tungstate of soda has been recommended for the purpose of rendering any article of female dress incombustible.
"Enquire Within Upon Everything" by Anonymous
It is impenetrable, incombustible, incapable of moistening and of drying.
"Lippincott's Magazine of Popular Literature and Science, Vol. 17, No. 97, January, 1876" by Various
Gauze, for mosquito-curtains; to make incombustible; stretched over mercurial horizon.
"The Art of Travel" by Francis Galton
The gas is incombustible, even in oxygen.
"Scientific American Supplement, No. 832, December 12, 1891" by Various
About 460 the king sent as a present to the Chinese Court an incombustible robe once worn by the Buddha.
"Hinduism and Buddhism, An Historical Sketch, Vol. 3 (of 3)" by Charles Eliot
Since graphite is infusible and incombustible except at exceedingly high temperatures, it is extensively used for crucibles and electrodes.
"Creative Chemistry" by Edwin E. Slosson
Clay, chalk, and indeed all incombustible substances, may be made red hot.
"Conversations on Chemistry, V. 1-2" by Jane Marcet
Perhaps the gas itself was incombustible.
"Astounding Stories of Super-Science, October, 1930" by Various
It is formed of incombustible materials, as are all the offices erected under the care of Sir John Soane.
"Old and New London" by Walter Thornbury
"Paper and Printing Recipes" by J. Sawtelle Ford
I have a method of bridges, very light and very strong; easy of transport and incombustible.
"The Century of Columbus" by James J. Walsh
The wood for such a pipe must be hard and practically incombustible, yet light.
"Tobacco Leaves" by W. A. Brennan
Ninian sat upon his tub with meekly folded hands, looking more than ever like a martyr who knew himself to be incombustible.
"Love Among the Lions" by F. Anstey
Another very important application of soluble silicates is the rendering of wood incombustible.
"British Manufacturing Industries" by L. Arnoux
Can you not now tell why water is incombustible?
"Curiosities of Heat" by Lyman B. Tefft
The fuse wire is usually enclosed in an incombustible holder.
"Physics" by Willis Eugene Tower
It was interesting to hear words like incombustibility and honorificabilitudinity spelled after this fashion.
"Makers and Romance of Alabama History" by B. F. Riley