/ Dictionary / Index A acanthite: Meaning and Definition of Find definitions for: a•can•thite Pronunciation: (u-kan'thīt), [key] — n. Mineral. the orthorhombic form of silver sulfide. Cf. argentite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acanthaceous acantho- Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language