Medical Definition of desiccation
: the act or process of desiccating or the state of being or becoming desiccated; especially : a complete or nearly complete deprivation of moisture (as by vaporization or by evaporation) or of water not chemically combined : dehydration from the long-wave diathermy machine two distinct currents are obtained which produce desiccation and electrocoagulation respectively—W. H. Schmidt
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