Pronunciation: i-'fe-m&r-&, -'fem-r&
Function: noun
Inflected Form(s): plural ephemera also ephem·er·ae /-m&r-E, -rE/; or ephemeras
Etymology: New Latin, from Greek ephEmera, neuter plural of ephEmeros
1 : something of no lasting significance -- usually used in plural
2 ephemera plural : collectibles (as posters, broadsides, and tickets) not intended to have lasting value