egg case(redirected from Egg (biology))
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1. A protective capsule that contains eggs, produced by certain insects, mollusks, and elasmobranch fishes.
2. See egg sac.
o•o•the•ca(ˌoʊ əˈθi kə)
n., pl. -cae (-sē).
a case or capsule containing eggs, as that of certain insects and mollusks.