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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.
capable of igniting and burning
easily annoyed; excitable
a combustible substance

1520s, from Middle French combustible, or directly from Late Latin combustibilis, from Latin combustus, past participle of combuere “to burn up, consume” (see combustion). Figurative sense is from 1640s; as a noun, from 1680s. Related: Combustibility (late 15c.).

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


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  • Combustion

    [kuh m-buhs-chuh n] /kəmˈbʌs tʃən/ noun 1. the act or process of burning. 2. Chemistry. 3. violent excitement; tumult. /kəmˈbʌstʃən/ noun 1. the process of burning 2. any process in which a substance reacts with oxygen to produce a significant rise in temperature and the emission of light 3. a chemical process in which two […]

  • Combustion-engine

    noun 1. any of various types of engines driven by energy produced by combustion.

  • Combustion-tube

    noun 1. a tube of hard glass used especially in a furnace for burning a substance in a current of air or oxygen.

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