/ Dictionary / Index O orderly room: Meaning and Definition of Find definitions for: or'derly room" Pronunciation: [key] the administrative office of a small military unit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. orderly officer order of business 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