an uncommon disorder in which one cannot see color. All objects are perceived in hues of gray. Also known as achromatopsia, this disorder renders one completely colorblind.

ACHROMATISM: "Most people cannot imagine being subject to achromatism and not being able to see colors."
Cite this page: N., Pam M.S., "ACHROMATISM," in, April 7, 2013, (accessed March 4, 2021).