Dictionary
e•phem•er•a
Pronunciation: (i-fem'ur-u), [key]—
n.,
—pl. -er•as, -er•aePronunciation: (-u-rē") [key] for 2.
1. a pl. of
ephemeron.
2. an ephemerid.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.