/ Dictionary / Index P platinize: Meaning and Definition of Find definitions for: plat•i•nize Pronunciation: (plat'n-īz"), [key] — -nized, -niz•ing. to coat or plate with metallic platinum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: platinize (Thesaurus) Platinite platinocyanic Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language