/ Dictionary / Index P periodide: Meaning and Definition of Find definitions for: per•i•o•dide Pronunciation: (pu-rī'u-dīd", -did), [key] — n. Chem. an iodide with the maximum proportion of iodine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. periodic table periodization Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language