plural noun
Hy·​dro·​phil·​i·​dae | \ ˌhīdrəˈfiləˌdē\

Definition of Hydrophilidae

: a large family of diving beetles that are mostly of scavenging or predaceous habits and of elliptical form and black color and that live chiefly in quiet pools and carry with them a film of air for respiration

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History and Etymology for Hydrophilidae

New Latin, from Hydrophilus, type genus (from hydr- + -philus) + -idae

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a usually brief trip or an expedition

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