*exuviate*

v. i. [ imp. & p. p. Exuviated, p. pr. & vb. n. Exuviating. ] ety>[ From Exuviae. ] (Zoöl.) To she [ 1913 Webster ]d an old covering or condition preliminary to taking on a new one; to molt.

There is reason to suppose that very old crayfish do not exuviate every year. Huxley. [ 1913 Webster ]