/ Dictionary / Index P platinic: Meaning and Definition of Find definitions for: pla•tin•ic Pronunciation: (plu-tin'ik), [key] — adj. Chem. of or containing platinum, esp. in the tetravalent state. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. plating platinic acid Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language