Source : Webster's Revised Unabridged Dictionary (1913)

Torrid \Tor"rid\, a. [L. torridus, fr. torrere to parch, to
   burn, akin to E. Thist: cf. F. torride. See {Thirst}.]
   1. Parched; dried with heat; as, a torrid plain or desert.
      ``Barca or Cyrene's torrid soil.'' --Milton.

   2. Violenty hot; drying or scorching with heat; burning;
      parching. ``Torrid heat.'' --Milton.

   {Torrid zone} (Geog.), that space or board belt of the earth,
      included between the tropics, over which the sun is
      vertical at some period of every year, and the heat is
      always great.

Source : WordNet®

Torrid Zone
     n : the part of the Earth's surface between the Tropic of Cancer
         and the Tropic of Capricorn; characterized by a hot
         climate [syn: {tropical zone}, {tropics}]