Definition of "ethereal" in English

adjective

1. Pertaining to the presupposition of an invisible air-like element permeating all of space, or to the higher regions beyond the earth or beyond the atmosphere.

   • Near-synonyms: aereous, celestial
   • ethereal space
   • ethereal regions

2. Pertaining to the immaterial realm, as symbolically represented by, or (in earlier epochs) conflated with, such atmospheric and extra-atmospheric concepts.

   • Near-synonyms: celestial, incorporeal, insubstantial, intangible, spiritual, uncorporeal, mystical, otherworldly, transcendental; see also Thesaurus:cosmic

3. Consisting of ether; hence, exceedingly light or airy; tenuous; spiritlike; characterized by extreme delicacy, as form, manner, thought, etc.

noun

1. Ellipsis of ethereal wave (“music genre”).