/ Dictionary / Index A aeronautics: Meaning and Definition of Find definitions for: aer•o•nau•tics Pronunciation: (âr"u-nô'tiks, -not'iks), [key] — n. (used with a sing. v.) the science or art of flight. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aeronautics (Thesaurus) aeronautical engineering aeronomy Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language