ephemeral(redirected from ephemeralness)
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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.
e·phem′er·al′i·ty, e·phem′er·al·ness n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
ephemeral(ĕ-fĕm′ĕr-ăl) [Gr. epi, on, + hemera, day]
Of brief duration.
Medical Dictionary, © 2009 Farlex and Partners
ephemeral(of organisms such as many desert plants) having a very short life cycle. The term is used specifically to describe those plants that have more than one generation a year, as opposed to ANNUAL, BIENNIAL, PERENNIAL.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005