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| py·gid·i·um [ pī jíddee əm ] (plural py·gid·i·a [ pī jíddee ə ]) |
noun |
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| Definition: |
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1. hindmost part of invertebrate: the hindmost part of the body in some insects, worms, and other invertebrates
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2. covering for part of invertebrate abdomen: a protective covering of the anal portion of the abdomen of some invertebrates
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| [Mid-19th century. < Greek puge "rump"] |
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 py·gid·i·al adjective |
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