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English word torrefaction comes from Latin torreo, and later Latin torrefacio (I parch.)
torreo (Latin)
(of the cold) I nip, pinch.. I roast; bake.. I scorch, burn, parch.
torrefacio (Latin)
I parch.
torrefaction (English)
Drying or roasting; especially an anaerobic heat treatment to make wood waterproof.