/ Dictionary / Index A astrogate: Meaning and Definition of Find definitions for: as•tro•gate Pronunciation: (as'tru-gāt"), [key] — -gat•ed, -gat•ing. to navigate in outer space. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: astrogate (Thesaurus) astrodynamics astrogeology Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language