/ Dictionary / Index G guide center: Meaning and Definition of Find definitions for: guide' cen'ter Pronunciation: [key] — Mil. Mil. a command to a marching formation to align itself behind a guide marching at the head of the formation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. guidebook guided Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language