diving beetle
noun
any of numerous predaceous water beetles of the family Dytiscidae, having the body adapted for swimming.
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
diving beetle
noun
any of the aquatic predatory beetles of the widely distributed family Dytiscidae, characterized by flattened hindlegs adapted for swimming and diving
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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