Source : Webster's Revised Unabridged Dictionary (1913)

Torrefy \Tor"re*fy\, v. t. [imp. & p. p. {Torrefied}; p. pr. &
   vb. n. {Torrefying}.] [L. torrere to parch + -fy: cf. F.
   torr['e]fier, L. torrefacere.] [Written also {torrify}.]
   1. To dry by a fire. --Sir T. Browne.

   2. (Metal.) To subject to scorching heat, so as to drive off
      volatile ingredients; to roast, as ores.

   3. (Pharm.) To dry or parch, as drugs, on a metallic plate
      till they are friable, or are reduced to the state
      desired.

Source : WordNet®

torrify
     See {torrefy}