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n. pl. ec·dy·ses (-sēz′)
The shedding of an outer integument or layer of skin, as by insects, crustaceans, and snakes; molting.

[Greek ekdusis, a stripping off, from ekduein, to take off : ek-, out, off; see ecto- + duein, to put on.]


n, pl -ses (-ˌsiːz)
(Zoology) the periodic shedding of the cuticle in insects and other arthropods or the outer epidermal layer in reptiles. See also ecdysone
[C19: New Latin, from Greek ekdusis, from ekduein to strip, from ek- ex-1 + duein to put on]
ecˈdysial adj


(ˈɛk də sɪs)

n., pl. -ses (-ˌsiz)
the shedding or casting off of an outer coat or integument by snakes, crustaceans, etc.
[1850–55; < Greek ékdysis=ekdý(ein) to strip off (ek- ec- + dýein to cause to enter) + -sis -sis]
ec•dys′i•al (-ˈdɪz i əl, -ˈdɪʒ əl) adj.


the process of shedding skin or other covering, typical of snakes and some insects. Cf. endysis.ecdysial, adj.
See also: Biology


The molting of the exoskeleton of arthropods.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ecdysis - periodic shedding of the cuticle in arthropods or the outer skin in reptilesecdysis - periodic shedding of the cuticle in arthropods or the outer skin in reptiles
shedding, sloughing - the process whereby something is shed
References in periodicals archive ?
6), including decreased feeding in larva (i.e., some larvae refused to feed), exosmosis of ecdysial fluid (Fig.
In addition to ecdysial burlesque acts, the audience will be treated to comedy, juggling, dramatic and drag acts.
Structure and ecdysial process of the larval spiracles of the Scarabaeoidea, with special reference to those of Lepidoderma.
1B) coronal suture 0.39-0.50 mm ([bar.x] = 0.45 [+ or -] 0.03 mm); pa-rietals with numerous scale-like dorsolateral microspinulae, an abbreviated anteroventral ecdysial cleavage line, prominent lateral keel or ridge between occipital suture and stemmatal region; corneal lenses (15), 1-4 elongate and dorsal, lens 5 anteroventral and ovoid, lens 6 (16) ventrolateral and smaller than dorsal lenses (Figs 1A, C).