torrefaction

noun3

1. •
   Drying or roasting; especially an anaerobic heat treatment to make wood waterproof.

   • After the biomass is dried, it needs to be heated further to the designed torrefaction temperature. — 2013
2. •
   The act or process of subjecting something to heat or to highly acidic substances.

   • The face of the man was withered and blackened as by the torrefaction of a thousand flames; his beard was grey as ashes; and his eyes were expiring embers. — 2013
3. •
   (figurative) An angry outburst; vituperation.

   • Under such torrefaction the doctor suffered an ebullition of his anger and he replied : “You are rather pachycephalic not to understand what I have said. — 1905