Definition of ephemeron in English:

ephemeron

Syllabification: e·phem·er·on
Pronunciation: /iˈfeməˌrän
 
/

noun (plural ephemerons)

An insect that lives only for a day or a few days.

Origin

from Greek, neuter of ephēmeros 'lasting only a day'.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day oleaginous
Pronunciation: ˌəʊlɪˈadʒɪnəs
adjective
rich in, covered with, or producing oil; oily