- to subject to fire or intense heat; parch, roast, or scorch.
- Pharmacology. to dry or parch (drugs) with heat.
- to roast, as metallic ores.
Origin of torrefy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for torrefaction
Sulphur always renders an ore refractory; for, when it is expelled by torrefaction, the ore melts easily.
This torrefaction, to which the name of fusion may be given, requires great care and dexterity.
- (tr) to dry (drugs, ores, etc) by subjection to intense heat; roast
C17: from French torréfier, from Latin torrefacere, from torrēre to parch + facere to make