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Ecdysis

Origin: NL, fr. Gr. 'ekdysis a getting out, fr. 'ekdyein, to put off; 'ek out _ dyein to enter.

(Science: biology) 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.