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achromic

or a·chro·mous

[ey-kroh-mik]
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adjective
  1. colorless; without coloring matter.
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Origin of achromic

First recorded in 1755–65; a-6 + chromic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for achromic

achromic

achromous

adjective
  1. colourless
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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
achromic in Medicine

achromic

(ā-krō′mĭk, ə-krō′-)
adj.
  1. Having no color; colorless.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.