Definition of diving beetle in English:

diving beetle

Syllabification: div·ing bee·tle

noun

A predatory water beetle that has fringed back legs for swimming and stores air under its wing cases while diving.
More example sentences
  • A pond is a little world in itself, he says, home to a dizzying array of creatures from frogs and newts to water boatmen, diving beetles, dragonflies and damselflies.
  • Predatory insects, such as dragonfly nymphs and diving beetles, may help mitigate bullfrog populations.
  • There are some 500 different kinds of predaceous diving beetles in North America, and the largest grow to an inch and a half.

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Pronunciation: ˌōlēˈajənəs
adjective
rich in, covered with, or producing oil; oily