ephemerid

Meaning

Any mayfly in the family Ephemeridae.

Synonyms

ephemeropteran

dayfly

ephemeral

ephemeron

mayfly

Etymology

From translingual Ephemeridae, from New Latin ephemerus, from Ancient Greek ἐφήμερος (ephḗmeros), the more common form of ἐφημέριος (ephēmérios, “of, for, or during the day, living or lasting but for a day, short-lived, temporary”), from ἐπί (epí, “on”) + ἡμέρα (hēméra, “day”).