Definition of "ephemera" in Anglais

noun

1. plural of ephemeron

   • the ephemera of springtime

noun

1. A mayfly (genus Ephemera).

   • These names, and many more, are, in various parts of the country, applied to an ephemera, which appears in most, if not all of the Trout waters of these kingdoms, throughout the whole season, although in greater numbers during spring and autumn, than at other times.