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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. Having a short lifespan or a short annual period of aboveground growth. Used especially of plants.
Something, especially a plant, that is ephemeral.

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

e·phem′er·al′i·ty, e·phem′er·al·ness n.
e·phem′er·al·ly adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ephemeralness - the property of lasting for a very short time
transience, transiency, transitoriness - an impermanence that suggests the inevitability of ending or dying
References in periodicals archive ?
In this connection, Warner also emphasized that this text, for all its saturation with a sense of indeterminacy, also produces in the reader a sense of wholeness (what we referred to as the effect of resonance) as well as a sense of human life's ephemeralness and paradoxical magnificence:
our ephemeralness, and we respond, partly due to this crushing existential situation, with hope, with our utopian belief in the power of ideas, in the gradual clarification of our role and place in the cosmos, in a more peaceful dialogue with others, and, above all, in the possibility of learning through the study of history ways to avoid committing the same mistakes and engaging in the same repugnant and dehumanising actions.
1) As the argument goes, the little girl at the novel's opening, whether Maggie Tulliver or Eliot's authorial persona, becomes Hopkins' Margaret, both of whom lament the all-too-soon demise of the season that in turn analogizes the ephemeralness of things.