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Related to ecdysis: instar


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 ?
The effects of limb removal on the rates of ecdysis of eyed and eyestalkless fiddler crabs, Uca pugilator.
Mealybugs were observed daily under a stereomicroscope and ecdysis was confirmed by the presence of exuviae near nymphs.
As described by Gabriel and Franco (2012), our analysis confirmed that all adults, after the last ecdysis, present the yellow color to the emerge, but we verified, for the first time, that this color is transitory and the color evolution is gradual.
puelchana was able to grow on the carapace of Callinectes exasperates enough to reach about half its adult size (27 mm in shell length) without being affected by the process of ecdysis.
The neem seed extract contains several potentially insecticidal active ingredients that have been proven to cause repellence, growth and developmental abnormalities, disorders of metabolism, defects in ecdysis, enzymatic inhibition, fecundity and other aberrations.
frugiperda pupae were affected by rutin concentrations in the diet, and the negative effects on the pupal stage were most likely related to the larval-pupal metamorphosis during ecdysis (Gazzoni et al.
Mykles DL (1980) The mechanism of fluid absorption at ecdysis in the American lobster, Homarus americanus.
The ecdysis (process of shedding skin), the eyes were found to be cloudy on clinical examination.
The ecdysis or molting enables the insects to escape from the infectious cycle of a fungus and more fungal spores rupture and penetrate the cuticle of the host during the prolonged intra-period of molting (Vey and Fargues, 1977).