/ Dictionary / Index D diallage: Meaning and Definition of Find definitions for: di•al•lage Pronunciation: (dī'u-lij), [key] — n. Mineral. a variety of diopside with a laminated structure, found in gabbro and other igneous rocks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dialer diallyl sulfide Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language