Definition of "combustible" [com•bus•ti•ble]

• Capable of igniting and burning. (adjective)
• Easily aroused or excited. (adjective)
• A substance that ignites and burns readily. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As used in steam engineering practice, however, the term combustible is applied to that portion of the fuel which is dry and free from ash, thus including both oxygen and nitrogen which may be constituents of the fuel, though not in the true sense of the term combustible."
• "Barkey pointed out that since the 1990s, young Kurds have spread across Turkey, including to shantytowns on the outskirts of Istanbul, where they represent what he calls a combustible addition to the country's fragile ethnic mix, which includes disaffected Turkish youth under the sway of ultra-nationalists."
• "Jerry Lee Lewis, a pianist Isacoff classifies as a 'combustible,' performs at the Rainbow in London in 1972."