Ecdysis \Ec"dy*sis\, n.; pl. {Ecdyses}. [NL., fr. Gr. 'e`kdysis
a getting out, fr. 'ekdy`ein, to put off; 'ek out + dy`ein to
enter.] (Biol.)
The act of shedding, or casting off, an outer cuticular
layer, as in the case of serpents, lobsters, etc.; a coming
out; as, the ecdysis of the pupa from its shell; exuviation.
[1913 Webster]