adj.

1. Lasting for a markedly brief time: “There remain some truths too ephemeral to be captured in the cold pages of a court transcript” (Irving R. Kaufman).
2. Living or lasting only for a day, as certain plants or insects do.

n.

A markedly short-lived thing.

[From Greek ephēmeros : ep-, epi-, epi- + hēmerā, day.]

ephemerality e·phem'er·al'i·ty or e·phem'er·al·ness n.
ephemerally e·phem'er·al·ly adv.

Temporary. Fleeting. Transitory.

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adjective

Lasting or existing only for a short time: evanescent, fleet, fleeting, fugacious, fugitive, momentary, passing, short-lived, temporal, temporary, transient, transitory. See continue/stop/pause, time.

adj

Definition: momentary, passing
Antonyms: enduring, eternal, everlasting, interminable, lasting, long, permanent, perpetual

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Short-lived. r-strategist plants are ephemeral in that they grow and reproduce rapidly when conditions are favourable, dying within a short space of time. Ephemeral streams flow only during and after intense rain. Such streams are typical of arid and semi-arid areas.

beginning and ending in a day

A plant that flowers for a very short time, such as a woodland plant that blooms in early spring before the trees leaf out and block the sunlight; a desert plant that blooms right after a rain.

IN BRIEF: Lasting a very short time.

Be aware of the ephemeral nature of material things. Lose your attachment to them. — Shui-ch'ing Tzu (between 1600 and 1911).

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Dansk (Danish)
adj. - kortvarig, døgn-, mode-, endags-, efemerisk
n. - enårig plante

Nederlands (Dutch)
kortstondig, eendags-

Français (French)
adj. - éphémère
n. - (Zool) éphémère

Deutsch (German)
adj. - eintägig, kurzlebig
n. - Eintagsfliege

Ελληνική (Greek)
adj. - εφήμερος

Italiano (Italian)
effimero

Português (Portuguese)
adj. - efêmero, passageiro

Русский (Russian)
эфемерный, мимолетный

Español (Spanish)
adj. - efímero, pasajero
n. - efímero, pasajero

Svenska (Swedish)
adj. - efemär, kortlivad, dagsländelik

中文（简体） (Chinese (Simplified))
朝生暮死的, 短暂的, 短命的, 只生存一天的事物

中文（繁體） (Chinese (Traditional))
adj. - 朝生暮死的, 短暫的, 短命的
n. - 只生存一天的事物

한국어 (Korean)
adj. - 하루 살 목숨의, 순식간의
n. - 덧없는 존재

日本語 (Japanese)
adj. - 一日の命の, 一日限りの, 短命な, はかない
n. - きわめて短命なもの, 短命な植物

العربيه (Arabic)
‏(صفه) سريع الزوال‏

עברית (Hebrew)
adj. - ‮בן-חלוף, קיקיוני‬
n. - ‮בן-חלוף, קיקיוני‬

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