Main Entry: ephem·era

Pronunciation: \i-ˈfe-mər-ə, -ˈfem-rə\

Function: noun

Inflected Form(s): plural ephemera also ephem·er·ae \-mər-ē, -rē\ or ephemeras

Etymology: New Latin, from Greek ephēmera, neuter plural of ephēmeros

Date: 1650

1 : something of no lasting significance —usually used in plural
2 ephemera plural : paper items (as posters, broadsides, and tickets) that were originally meant to be discarded after use but have since become collectibles