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pygidium

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noun py·gid·i·um \pī-ˈji-dē-əm\

Definition of pygidium

plural -gidia \-ˈji-dē-ə\

  1. :  a caudal structure or the terminal body region of various invertebrates

pygidial play \-dē-əl\ adjective


Origin of pygidium

New Latin, from Greek pygidion, diminutive of pygē rump


First Known Use: 1848


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