Daltonian /dɔːlˈtəʊnɪən/adjective 1noun 1forms 4 adjective1 •Of or pertaining to John Dalton (1766-1844), English chemist, physicist, and pioneer of modern atomic theory who also researched colour blindness. noun1 •(old-fashioned) A color blind person. formsDaltonians · daltonians · more Daltonian · most Daltonian
