[ey-kroh-muh-tiz-uh m]

noun Optics.

freedom from color.
freedom from chromatic aberration, as in an achromatic lens.

Nearby words

  1. achromatic objective,
  2. achromatic prism,
  3. achromatic vision,
  4. achromaticity,
  5. achromatin,
  6. achromatize,
  7. achromatolysis,
  8. achromatophil,
  9. achromatophilia,
  10. achromatopsia

Origin of achromatism

First recorded in 1790–1800; achromat(ic) + -ism Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for achromatism

Medicine definitions for achromatism


[ā-krōmə-tĭz′əm, ə-krō-]


The quality of being achromatic.
The correction of chromatic aberration by combining lenses of different refractive indexes and different dispersion.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.