/ Dictionary / Index A astronautical: Meaning and Definition of Find definitions for: as•tro•nau•ti•cal Pronunciation: (as"tru-nô'ti-kul, -not'i-), [key] — adj. of or pertaining to astronautics or astronauts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: astronautical (Thesaurus) astronaut astronautical engineering Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language