/ Dictionary / Index D dual-purpose: Meaning and Definition of Find definitions for: du•al-pur•pose Pronunciation: (d'ul pûr'pus, dy'-), [key] — adj. serving two functions. (of cattle) bred for two purposes, as to provide beef and milk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dual personality dual space Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language