1. To dry by a fire.
2. (Science: chemistry) To subject to scorching heat, so as to drive off volatile ingredients; to roast, as ores.
3. (Science: pharmacology) To dry or parch, as drugs, on a metallic plate till they are friable, or are reduced to the state desired.
Origin: L. Torrere to parch _ -fy: cf. F. Torrefier, L. Torrefacere
Alternative forms: torrify.