Noun order ephemeroptera has 1 sense
  1. Ephemeroptera, order Ephemeroptera, Ephemerida, order Ephemerida - mayflies
    --1 is a kind of animal order
    --1 is a member of Insecta, class Insecta, Hexapoda, class Hexapoda
    --1 has members: ephemerid, ephemeropteran; Ephemeridae, family Ephemeridae
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