ther·mol·y·sis 
(thər-mŏlĭ-sĭs)
(thər-mŏlĭ-sĭs)n. pl. ther·mol·y·ses (-sēz′)
1. Physiology Dissipation of heat from the body, as by evaporation.
2. Chemistry Dissociation of chemical bonds or decomposition of compounds by heat.
ther′mo·lytic (thûr′mə-lĭtĭk) adj.