/ Dictionary / Index P perchloric: Meaning and Definition of Find definitions for: per•chlo•ric Pronunciation: (pur-klôr'ik, -klōr'-), [key] — adj. Chem. of or derived from perchloric acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. perchlorate perchloric acid Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language