• synonyms


[ey-kroh-muh-tiz-uh m]
noun Optics.
  1. freedom from color.
  2. freedom from chromatic aberration, as in an achromatic lens.
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Origin of achromatism

First recorded in 1790–1800; achromat(ic) + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for achromatism

Historical Examples of achromatism

achromatism in Medicine


(ā-krōmə-tĭz′əm, ə-krō-)
  1. The quality of being achromatic.
  2. The correction of chromatic aberration by combining lenses of different refractive indexes and different dispersion.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.