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[kuh m-buhs-tuh-buh l] /kəmˈbʌs tə bəl/
capable of catching fire and burning; inflammable; flammable:
Gasoline vapor is highly combustible.
easily excited:
a high-strung, combustible nature.
a combustible substance:
Trucks carrying combustibles will not be allowed to use this tunnel.
1520-30; < Late Latin combūstibilis. See combust, -ible
Related forms
combustibility, combustibleness, noun
combustibly, adverb
uncombustible, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for combustibles
  • The wood and other combustibles were heaped all round him.
  • It appears likewise in all wood and combustibles, from which there generally arises exudation and always evaporation.
  • We've been burning wood and other combustibles too, for much longer.
  • Keep the container outdoors and away from combustibles.
  • Most people know enough not to stash piles of oily rags and other potential combustibles around the house and garage.
  • Store firewood and all other combustibles away from your home.
  • Ashes and embers can stay hot for days and ignite combustibles.
  • Space heaters should be used only in an area that is clear of any combustibles.
  • Consequently, the possibility exists that common combustibles in proximity to a radiant heater can be heated to ignition.
  • Avoid the use of extension cords with electric heaters and never use heaters to dry clothing or other combustibles.
British Dictionary definitions for combustibles


capable of igniting and burning
easily annoyed; excitable
a combustible substance
Derived Forms
combustibility, combustibleness, noun
combustibly, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for combustibles
1520s, from Fr. combustible, from L.L. combustibilis, from combustus, pp. of combuere (see combustion). Fig. sense is from 1640s; as a noun, from 1680s.
Online Etymology Dictionary, © 2010 Douglas Harper
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combustibles in Medicine

combustible com·bus·ti·ble (kəm-bŭs'tə-bəl)
Capable of igniting and burning. n.
A substance that ignites and burns readily.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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