ephemera
NounOpen English WordNet
Noun (1)ephemerae
- something transitory; lasting a dayType of time
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Webster's Dictionary (1913)
E·phem′e·ra noun
Origin: NL., fr. Gr. … a day fly, fr. … daily, lasting but a day; … over + … day.
1. Medicine A fever of one day's continuance only.
2. Zoology A genus of insects including the day flies, or ephemeral flies. See Ephemeral fly, under Ephemeral.
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54