Source : Webster's Revised Unabridged Dictionary (1913)

Desquamation \Des`qua*ma"tion\, n. [Cf. F. desquamation.] (Med.)
   The separation or shedding of the cuticle or epidermis in the
   form of flakes or scales; exfoliation, as of bones.

Source : WordNet®

desquamation
     n : loss of bits of outer skin by peeling or shedding or coming
         off in scales [syn: {peeling}, {shedding}]