Breadcrumb Home > Thesaurus > P Synonyms of protanopia Find synonyms for: Noun 1. protanopia, red-blindness, red-green dichromacy, red-green color blindness, red-green colour blindness usage: dichromacy characterized by lowered sensitivity to long wavelengths of light resulting in an inability to distinguish red and purplish blue WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of protanopia (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: turgid Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language