/ Dictionary / Index P platband: Meaning and Definition of Find definitions for: plat•band Pronunciation: (plat'band"), [key] — n. Archit. a flat structural member, as a lintel or flat arch. any shallow molding having a flat face. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Plataea plat du jour Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language