/ Dictionary / Index P perchloride: Meaning and Definition of Find definitions for: per•chlo•ride Pronunciation: (pur-klôr'īd, -id, -klōr'-), [key] — n. Chem. the chloride of any particular element or group with the maximum proportion of chlorine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: perchloride (Thesaurus) perchloric acid perchlorinate 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