Noun ephemerid has 1 sense
  1. ephemerid, ephemeropteran - short-lived insect
    --1 is a kind of insect
    --1 is a member of
     Ephemeroptera, order Ephemeroptera, Ephemerida, order Ephemerida
    --1 has particulars: Plectophera; mayfly, dayfly, shadfly
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