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achromate

American

[ak-ruh-meyt] / ˈæk rəˌmeɪt /

noun

Ophthalmology.

a person unable to perceive color.

Etymology

Origin of achromate

Back formation from achromatic

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.