evanescent
UK /ɛvəˈnɛs(ə)nt/ · US /ˌɛvəˈnɛsənt/ adjective
- adjective Disappearing, vanishing.
- adjective (electromagnetism) 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.
- adjective (mathematics) Of a number or value: diminishing to the point of reaching zero as a limit; infinitesimal.
- adjective Barely there; almost imperceptible.
- adjective Ephemeral, fleeting, momentary.
- adjective (botany) Of plant parts: shed after a period.
Antonyms
nonevanescent earthly ephemeral brief deciduous fleeting flying fugacious fugitive instant momentary passing
Etymology
Borrowed from French évanescent (“evanescent”), from Latin ēvānēscēns (“disappearing, vanishing”), present participle of ēvānēscō (“to disappear, vanish; to die out, fade away; to lapse”), from ē- (variant of ex- (prefix meaning ‘away, out’)) + vānēscō (“to vanish”) (from vānus (“empty, vacant, void”), from Proto-Indo-European *h₁weh₂- (“to abandon, leave”)) + -ēscō (suffix forming verbs with the sense ‘to become’)).
Webster’s 1913
- adjective Liable to vanish or pass away like vapor; vanishing; fleeting; as, evanescent joys.
- adjective Vanishing from notice; imperceptible.
Etymology [L. evanescens, -entis, p. pr. of evanescere.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “evanescent”, CC BY-SA 4.0. Details