/ Dictionary / Index E ecdysis: Meaning and Definition of Find definitions for: ec•dy•sis Pronunciation: (ek'du-sis), [key] — pl. -ses the shedding or casting off of an outer coat or integument by snakes, crustaceans, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ecdysis (Thesaurus) ecdysiast ecdysone Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language