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New American Oxford Dictionary

pyrolysis

py rol y sis |pīˈräləsəs paɪˈrɑləsəs | ▶noun Chemistry decomposition brought about by high temperatures. DERIVATIVES py ro lyt ic |ˌpīrəˈlitik |adjective

Oxford Dictionary

pyrolysis

pyrolysis |pʌɪˈrɒlɪsɪs | ▶noun [ mass noun ] Chemistry decomposition brought about by high temperatures. DERIVATIVES pyrolytic |pʌɪrəˈlɪtɪk |adjective