hydrophyllium definition

  • noun:
    • among the level, leaf-like, protective zooids addressing various other zooids of specific Siphonophora.
    • one of several level, leaflike, safety zooids, addressing other zooids of particular Siphonophora.
    • The particular protective envelop or hydrotheca of this hydranths of some oceanic hydrozoans, given that Siphonophora, of laminar or foliaceous character. Also known as bract.
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