evanescent

Tanımlar (İngilizce)

1. sıfat Disappearing, vanishing.

   “He cannot ſuppreſs his diſapprobation […] of thoſe evaneſcent echoes of ſchool philoſophy, faint-warbling through the grove of letters, to the injury of natural and ſcientific knowledge, and the annoyance of English literature.”

2. sıfat Of an oscillating electric or magnetic field: not propagating as an electromagnetic wave but having its energy spatially concentrated in the vicinity of its source.

   “Consequently, the electromagnetic fields have plane-wave characteristics in local regions, except immediately adjacent to a caustic where there is a rapid transition from the wavelike behavior of the local plane-wave fields to the evanescent behavior beyond the ray path.”

3. sıfat Of a number or value: diminishing to the point of reaching zero as a limit; infinitesimal.

   “And what are theſe Fluxions? The Velocities of evaneſcent Increments? And what are theſe ſame evaneſcent Increments? They are neither finite Quantities, nor Quantities infinitely ſmall, nor yet nothing. May we not call them the Ghoſts of departed Quantities?”

4. sıfat Barely there; almost imperceptible.

   “If the Fluids moving in an Evaneſcent Artery [i.e., a capillary] appear Globular, I ſuppose its becauſe the Canal is round, which alters the Caſe much.”

5. sıfat Ephemeral, fleeting, momentary.

   “It is to be obſerved, farther, that when we annihilate any thing in our Mind, we conſider it as ſomething evaneſcent, and removed out of Sight; […]”

6. sıfat Of plant parts: shed after a period.

   “Per[ianth]. Berry from the receptacle elongated into a cup globular, ſucculent, gaging at the top, colour'd, at length waſting from dryneſs, evaneſcent.”