achromatism

[ ey-kroh-muh-tiz-uhm ]

noun

, Optics.

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

Word History and Origins

Origin of achromatism¹

First recorded in 1790–1800; achromat(ic) + -ism

Example Sentences

The low dispersive power of water masks, as Helmholtz has remarked, the imperfect achromatism of the eye.

From Project Gutenberg

Thus examined, the departure of the eye from achromatism appears very gross indeed.

From Project Gutenberg

These phenomena are fully explained by the imperfect achromatism of the eye.

From Project Gutenberg

The achromatism of prisms depends upon the same principles, and it is effected in the same way as that of lenses.

From Project Gutenberg

It would seem that the eye is but little sensitive to colours thus presented, perhaps on account of its own want of achromatism.

From Project Gutenberg