/ Dictionary / Index I impsonite: Meaning and Definition of Find definitions for: imp•son•ite Pronunciation: (imp'su-nīt"), [key] — n. a black variety of asphaltite with a jagged fracture. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. imprudent impudence Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language