The quality or fact of being temporary, short-lived, or lasting only a very short time.
From ephemeral (via Greek ephemeros 'lasting a day') plus the suffix -ity, which creates abstract nouns referring to qualities or conditions.
Buddhist philosophy embraces ephemerality as a core truth about existence—the constant change and impermanence of all things—and science confirms it: literally everything from stars to molecules is in flux.
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