n. (pl. ephemeras or ephemerae) 1 a an insect living only a day or a few days. b any insect of the order Ephemeroptera, e.g. the mayfly. 2 = EPHEMERON. [mod.L f. Gk ephemeros lasting only a day (as EPI-, hemera day)]
EPHEMERA
Meaning of EPHEMERA in English
English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012