Definition of Ephemeroptera in English:

Ephemeroptera

plural noun

Biology
  • 1An order of insects that comprises the mayflies.

    • ‘We further included four representatives of the Zygoptera, one representative of the Epiophlebiidae, and one representative of the Ephemeroptera of the family Ephemeridae as outgroup taxa.’
    1. 1.1Insects of the order "Ephemeroptera"; mayflies.

Origin

Modern Latin (plural), from Ephemera (genus name) + pteron wing.

Pronunciation:

Ephemeroptera

/əˌfeməˈräptərə/