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) ]
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) ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012