The Collaborative International Dictionary of English v.0.48:
Desiccation \Des`ic*ca"tion\, n. [Cf. F. dessiccation.] The act of desiccating, or the state of being desiccated. [1913 Webster]WordNet (r) 3.0 (2006):
desiccation n 1: dryness resulting from the removal of water [syn: dehydration, desiccation] 2: the process of extracting moisture [syn: dehydration, desiccation, drying up, evaporation]