- plural of ephemeron.
ephemera
Americannoun
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a mayfly, esp one of the genus Ephemera
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something transitory or short-lived
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(functioning as plural) a class of collectable items not originally intended to last for more than a short time, such as tickets, posters, postcards, or labels
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a plural of ephemeron
Other Word Forms
Noun Inflected Forms
Etymology
Origin of ephemera
1670–80; < Greek ephḗmera, neuter plural of ephḗmeros, taken as singular; see ephemeral
Explanation
Ephemera don't stick around for very long. You might enjoy such ephemera as sunsets and rainbows, things appearing only briefly, and so enjoyed all the more. In Latin, ephemera was a word for a fever that didn't last long. Today, ephemera is the plural form of ephemeron, which means "something impermanent or lasting only a short time." French historian Fernand Braudel referred to events as “the ephemera of history,” likening them to fireflies that light the dark for just a moment.
Vocabulary lists containing ephemera
This Week in Words: November 24 - 30, 2018
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The Cuckoo's Calling
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This Week In Culture: December 28, 2019–January 3, 2020
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
“At first, the new works were more nostalgic, with vintage photos and female ephemera, like gloves and such,” Saar said.
From Los Angeles Times ● Jul. 27, 2026
At mid-century, the word “design” implied fashionable ephemera, whereas Noguchi’s own work—furniture as well as sculptures—pursued something more enduring: the aesthetic orchestration of forms, pressures, space and human communication.
From The Wall Street Journal ● Jul. 1, 2026
If anything proves the market value of seemingly worthless ephemera, Walker added, it’s fans clawing for printed set lists at the end of a concert.
From Los Angeles Times ● Mar. 2, 2026
How well can you recall the past 250 years of books, music, movies and other cultural ephemera that makes up our country?
From The Wall Street Journal ● Jan. 28, 2026
She is the gaudy, party-coloured ephemera of street commerce, and will disappear from view in a fortnight's time, to be seen no more until the opening summer of '53.
From Chambers's Edinburgh Journal, No. 448 Volume 18, New Series, July 31, 1852 by William Chambers
Scanning the globe and the human ephemerae upon it from the point of view of a millionaire in years, Wells still considers that "Nazi Germany may well bring down conclusive disaster on our species."
From Time Magazine Archive
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Above, against the slaty-gray cloud-wrack, four exquisite slender girl-forms appeared, with loose hair, silver-gray drapery and gauzy wings as of ephemerae, flying in pursuit of the cloud.
From A Crystal Age by W. H. (William Henry) Hudson
A curious thing about that night was a swarm of ephemerae so dense that it was like a blinding snowstorm.
From Philip Gilbert Hamerton An Autobiography, 1834-1858, and a Memoir by His Wife, 1858-1894 by Philip Gilbert Hamerton
I do not, however, mean to say that they are the same flies, but more probably successive generations of ephemerae of the same species.
From The Mirror of Literature, Amusement, and Instruction Volume 12, No. 324, July 26, 1828 by Various
Then there are the blue and the brown, both ephemerae, which come on, the first in dark days, the second in bright days; these flies, when well imitated, are very destructive to fish.
From The Mirror of Literature, Amusement, and Instruction Volume 12, No. 324, July 26, 1828 by Various
To talk of "relaxations," whether in cultural or political control, or of economic or social reform, is to talk of ephemeras.
From Time Magazine Archive
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.