/ Dictionary / Index A aether: Meaning and Definition of Find definitions for: ae•ther Pronunciation: (ē'thur), [key] — n. ether (defs. 3–5). (cap.) the ancient Greek personification of the clear upper air of the sky. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aether (Thesaurus) Aethelstan aethon Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language