Adjective

(en adjective)

for only a moment.

Happening at every moment; perpetual.

Ephemeral or relatively short-lived.

{{quote-Fanny Hill, part=3 , Yet oh! what an immense difference did I feel between this impression of a pleasure merely animal, and struck out of the collision of the sexes by a passive bodily effect, from that sweet fury, that rage of active delight which crowns the enjoyments of a mutual love-passion, where two hearts, tenderly and truly united, club to exalt the joy, and give it a spirit and soul that bids defiance to that end which mere momentary desires generally terminate in, when they die of a surfeit of satisfaction!}}

*{{quote-book, year=1907, author=

, title=The Dust of Conflict , chapter=20 citation , passage=Tony's face expressed relief, and Nettie sat silent for a moment until the vicar said “It was a generous impulse, but it may have been a momentary one,

Adjective

(en adjective)

Lasting for a short period of time.

* Vicesimus Knox

Esteem, lasting esteem, the esteem of good men, like himself, will be his reward, when the gale of ephemeral popularity shall have gradually subsided.

* Sir J. Stephen

sentences not of ephemeral , but of eternal, efficacy

* '>citation

It was during an access of this kind that I suddenly left my home, and bending my steps towards the near Alpine valleys, sought in the magnificence, the eternity of such scenes, to forget myself and my ephemeral , because human, sorrows.

(biology) Existing for only one day, as with some flowers, insects, and diseases.

(geology, of a body of water) Usually dry, but filling with water for brief periods during and after precipitation.

* 1986 , W.H. Raymond, "Clinoptilolite Deposit in the Pine Ridge Indian Reservation, South Dakota, U.S.A.", in Y?ichi Murakami et al. (editors), New Developments in Zeolite Science and Technology (conference proceedings), Elsevier, ISBN 978-0-444-98981-9, page 80:

The graben constitutes a depositional basin and a topographic low, underlain by Cretaceous shales, in which volcanic debris accumulated in ephemeral lakes and streams in Oligocene and early Miocene time.