plural noun Hy·dro·met·ri·dae

Definition of Hydrometridae

  1. :  a family of small slender long-legged semiaquatic bugs closely related to the water striders

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Origin and Etymology of hydrometridae

New Latin, from Hydrometra, type genus (from hydr- + -metra, from Greek metrein to measure, traverse, from metron measure) + -idae — more at measure

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a trip made at another's expense

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