torrefy

UK: /ˈtɒrɪˌfaɪ/ US: (tôr′ə fī′, tor′-)

WordReference Random House Unabridged Dictionary of American English © 2026

tor•re•fy  (tôr′ə fī′, tor′-), v.t., -fied, -fy•ing. 

1. to subject to fire or intense heat; parch, roast, or scorch.
2. [Pharm.] to dry or parch (drugs) with heat.
3. to roast, as metallic ores.

Also, torrify.

• Latin torrefacere to make dry or hot, equivalent. to torre-, stem of torrēre to dry up, parch, scorch + facere -fy; see torrid
• 1595–1605

tor•re•fac•tion (tôr′ə fak′shən, tor′-), n. 

Collins Concise English Dictionary © HarperCollins Publishers::

torrefy / ˈtɒrɪˌfaɪ/ verb ( -fies, -fying, -fied)

1. (transitive) to dry (drugs, ores, etc) by subjection to intense heat; roast

Etymology: 17th Century: from French torréfier, from Latin torrefacere, from torrēre to parch + facere to make

torrefaction / ˌtɒrɪˈfækʃən/ noun