\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.