[tawr-uh-fahy, tor-]
verb (used with object), torrefied, torrefying.
to subject to fire or intense heat; parch, roast, or scorch.
Pharmacology. to dry or parch (drugs) with heat.
to roast, as metallic ores.
Also, torrify.

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

torrefaction [tawr-uh-fak-shuhn, tor-] , noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
torrefy (ˈtɒrɪˌfaɪ)
vb , -fies, -fying, -fied
(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]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
We prefer a continuous reactor using superheated steam at atmospheric pressure to dry and torrefy the wood feed.
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