/ Dictionary / Index A aeronaut: Meaning and Definition of Find definitions for: aer•o•naut Pronunciation: (âr'u-nôt", -not"), [key] — n. the pilot of a balloon or other lighter-than-air aircraft. a traveler in an airship. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aeronaut (Thesaurus) aeron. aeronautical Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language