/ Dictionary / Index D dew-point spread: Meaning and Definition of Find definitions for: dew'-point spread" Pronunciation: (d'point", dy'-), [key] the number of degrees of difference between the air temperature and the dew point. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dew point dew-worm Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language