[ih-fem-uh-ron, -er-uh n]

noun, plural e·phem·er·a [ih-fem-er-uh] /ɪˈfɛm ər ə/, e·phem·er·ons.

anything short-lived or ephemeral.
ephemera, items designed to be useful or important for only a short time, especially pamphlets, notices, tickets, etc.

Origin of ephemeron

1570–80; < Greek ephḗmeron short-lived insect, noun use of neuter of ephḗmeros; see ephemeral
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British Dictionary definitions for ephemeron


noun plural -era (-ərə) or -erons

(usually plural) something transitory or short-lived

Word Origin for ephemeron

C16: see ephemeral
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for ephemeron

1620s, from Greek (zoon) ephemeron, neuter of ephemeros (see ephemera). Figurative use by 1771.

Online Etymology Dictionary, © 2010 Douglas Harper