/ Dictionary / Index O overscale: Meaning and Definition of Find definitions for: o•ver•scale Pronunciation: (ō'vur-skāl'), [key] — adj. larger or more extensive than normal or usual; outsize; oversize. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. overrun overscore 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