/ Thesaurus / P Synonyms of protanopic Find synonyms for: Adjective1. protanopic, red-blind, blind (vs. sighted), unsightedusage: inability to see the color red or to distinguish red and bluish-greenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language