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| e·phem·er·id [ i fémmərid ] (plural e·phem·er·ids) |
noun |
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| Definition: |
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short-lived insect: an insect of the mayfly family that emerges in the summer from a long larval stage under water and lives only a matter of hours as an adult. Family Ephemeridae.
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| [Late 19th century. < modern Latin Ephemeridae< Greek ephēmeros (see ephemera2)] |
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