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achromatous

American  
[ey-kroh-muh-tuhs] / eɪˈkroʊ mə təs /

adjective

  1. without color.

  2. having little or inadequate color; lighter in color than normal.

achromatous British  
/ əˈkrəʊmətəs /

adjective

  1. having little or no colour or less than is normal

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of achromatous

achromat(ic) + -ous

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.