[pahy-rol-uh-sis] /paɪˈrɒl ə sɪs/

noun, Chemistry.
the subjection of organic compounds to very high temperatures.
the resulting decomposition.
the application of heat to chemical compounds in order to cause decomposition
chemical decomposition of compounds caused by high temperatures

1879, from pyro- + -lysis. Related: Pyrolytic.

pyrolysis py·rol·y·sis (pī-rŏl’ĭ-sĭs)
Decomposition or transformation of a chemical compound caused by heat.


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