Daltonism

== English == === Alternative forms === daltonism === Etymology === From Dalton +‎ -ism. Named after John Dalton (1766–1844), who suffered from the condition and conducted early research on it. === Pronunciation === (UK) IPA(key): /ˈdɔːltənɪzəm/ === Noun === Daltonism (uncountable) (medicine, pathology) An inability or defective ability to perceive or distinguish certain colors, especially red-green color blindness. Achromatopsia. ==== Synonyms ==== (inability or defective ability to perceive or distinguish certain colors): color blindness, dichromatism ==== Hypernyms ==== (inability or defective ability to perceive color): achromatism, achromatopia, achromatopsia ==== Related terms ==== Daltonian Daltonic daltonic ==== Translations ==== === References === “Daltonism”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC. Dorland's Pocket Medical Dictionary, 22nd edition, W. B. Saunders, 1977 === Anagrams === mandolist