The Collaborative International Dictionary of English v.0.48:
Desquamate \Des"qua*mate\, v. i. [L. desquamatus, p. p. of desquamare to scale off; de- + squama scale.] (Med.) To peel off in the form of scales; to scale off, as the skin in certain diseases. [1913 Webster]WordNet (r) 3.0 (2006):
desquamate v 1: peel off in scales; "dry skin desquamates" [syn: desquamate, peel off]