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WordNet-Online 
 Definitions from WordNet
Noun ephemeridae has 1 sense 
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| Definitions from the WebEphemeridaeDescription:Ephemeridae refers to a family of insects commonly known as mayflies. These insects are characterized by their short lifespan in the adult stage, typically lasting only a day or two. The family Ephemeridae belongs to the order Ephemeroptera, and it includes numerous species found worldwide. Senses:
 Sample Sentences:
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