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Alternative forms[edit]


Latin aetherius (of or pertaining to the ether, the sky, or the air or upper air; ethereal), from Ancient Greek αἰθέριος (aithérios, of or pertaining to the upper air; ethereal).



ethereal (comparative more ethereal, superlative most ethereal)

  1. Pertaining to the hypothetical upper, purer air, or to the higher regions beyond the earth or beyond the atmosphere; celestial; otherworldly.
    ethereal space
    ethereal regions
    • 1667: Milton, Paradise Lost, book VII
      Go, heavenly guest, ethereal messenger.
    • 1862: Thoreau, Walking.
      I trust that we shall be more imaginative, that our thoughts will be clearer, fresher, and more ethereal, as our sky,...
  2. Consisting of ether; hence, exceedingly light or airy; tenuous; spiritlike; characterized by extreme delicacy, as form, manner, thought, etc.
    • 1733: Pope, An Essay on Man
      Vast chain of being, which from God began, Natures ethereal, human, angel, man.
  3. Delicate, light and airy.
  4. (chemistry) To do with ether.

Derived terms[edit]