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backswimmer
[ bak-swim-er ]
noun
- any of numerous predaceous aquatic hemipterous insects, of the family Notonectidae, that swim on their backs, and may inflict a painful bite if handled.
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Word History and Origins
Origin of backswimmer1
First recorded in 1860–65; back 1 + swimmer ( def )
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[in-vet-er-it ]
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