/ Dictionary / Index P platinotype: Meaning and Definition of Find definitions for: plat•i•no•type Pronunciation: (plat'n-ō-tīp"), [key] — n. Photog. a process of printing positives in which a platinum salt is used, rather than the usual silver salts, in order to make a more permanent print. Also calleda print made by this process. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. platinoid platinous Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language