Source : Webster's Revised Unabridged Dictionary (1913)

Prigidity \Pri*gid"i*ty\, n. [L. frigiditas: cf. F.
   frigidit['e].]
   1. The condition or quality of being frigid; coldness; want
      of warmth.

            Ice is water congealed by the frigidity of the air.
                                                  --Sir T.
                                                  Browne.

   2. Want of ardor, animation, vivacity, etc.; coldness of
      affection or of manner; dullness; stiffness and formality;
      as, frigidity of a reception, of a bow, etc.

   3. Want of heat or vigor; as, the frigidity of old age.