ephemeron, ephemeral -- (anything short-lived, as an insect that lives only for a day in its winged form)
Overview of adj ephemeral
The adj ephemeral has 1 sense
ephemeral, passing, short-lived, transient, transitory, fugacious -- (lasting a very short time; "the ephemeral joys of childhood"; "a passing fancy"; "youth's transient beauty"; "love is transitory but it is eternal"; "fugacious blossoms")
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