/ Dictionary / Index G galactic latitude: Meaning and Definition of Find definitions for: galac'tic lat'itude Pronunciation: [key] — Astron. Astron. the angular distance from the galactic equator of a point on the celestial sphere. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. galactic equator galactic longitude Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language