The Collaborative International Dictionary of English v.0.48:

Exsiccation \Ex`sic*ca"tion\, n. [L. exsiccatio: cf. F.
   exsiccation.]
   The act of operation of drying; evaporation or expulsion of
   moisture; state of being dried up; dryness. --Sir T. Browne.
   [1913 Webster]