Definitions

from The Century Dictionary.

  • In entom.: The butterflies; the diurnal Lepidoptera or Rhopalocera, as distinguished from the Crepuscularia and Nocturna, or Heterocera (moths).
  • An occasional name of insects which in the mature state live only a day or so, as the Ephemeræ or day-flies.

from the GNU version of the Collaborative International Dictionary of English.

  • noun plural (Zoöl.) A division of Lepidoptera, including the butterflies; -- so called because they fly only in the daytime.

Etymologies

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