/ Dictionary / Index A argentum: Meaning and Definition of Find definitions for: ar•gen•tum Pronunciation: (är-jen'tum), [key] — n. Chem. silver. Symbol: Ag Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. argentous arghool Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language