/ Dictionary / Index D dimorphite: Meaning and Definition of Find definitions for: di•mor•phite Pronunciation: (dī-môr'fīt), [key] — n. a mineral, arsenic sulfide, AsS, yellow-orange in color and similar in its properties to orpiment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dimorphism dimorphous Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language