/ Dictionary / Index A astronautics: Meaning and Definition of Find definitions for: as•tro•nau•tics Pronunciation: (as"tru-nô'tiks, -not'iks), [key] — n. (used with a sing. v.) the science of or technology involved in travel beyond the earth's atmosphere, including interplanetary and interstellar flight. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: astronautics (Thesaurus) astronautical engineering astronavigation Related Content Daily Word Quiz: prevalent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language