Pyrolysis is a thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen. Pyrolysis typically occurs under pressure and at operating temperatures above 430 °C (800 °F). In practice it is not possible to achieve a completely oxygen-free atmosphere.
OmegaWiki Dictionary
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pyrolysis The breaking apart of complex molecules into simpler units by the use of heat.\n(Source: MGH)
