exoterm oil

[shahmata]

Пожалуйста, помогите перевести.exoterm

Слово встречается в следующем контексте:
The PTI PMMA process solves this problem with a unique combination of feed formulation and process control making it much easier to control the reaction rate and product molecular weight by reducing the rapid exotherm.
Заранее спасибо

[Yakov]

reducing the rapid exothermic reaction