Definition of Spio
:a widely distributed genus (the type of the family Spionidae) of small burrowing marine polychaete worms without tentacles or palps but with enlarged dorsal cirri acting as gills
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Spio
noun
\
ˈspī(ˌ)ō
\
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Origin and Etymology of spio
New Latin Spion-, Spio, perhaps from Latin Spio, one of the Nereids, from Greek Speiō
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