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Definition of: pyrolysis
(pī·rol′ə·sis) noun Chem.
Decomposition by the application of or as a result of heat. [<NL <Gk. pyr, pyros a fire + lysis a loosing <lyein loosen]
—py·ro·lit·ic (pī′rə·lit′ik, pir′ə-) adjective
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