/ Dictionary / Index H hydrargyrism: Meaning and Definition of Find definitions for: hy•drar•gy•rism Pronunciation: (hī-drär'ju-riz"um), [key] — n. Pathol. mercurialism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydrargillite hydrargyrum Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language