/ Dictionary / Index O open plan: Meaning and Definition of Find definitions for: o'pen plan' Pronunciation: [key] a floor plan without fully enclosed spaces for distinct rooms. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. open-pit open policy Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language