1. the quality or state of being without color; absence of color
Usage: technical
2. the correction of chromatic aberration in optical instruments
Usage: optics

Examples

• The achromatism of the crystal made it appear completely transparent.
• Modern telescope lenses are designed with achromatism to reduce color distortion.
• The photographer noticed the achromatism in the old black and white prints.
• Scientists studied the achromatism of various minerals under laboratory conditions.
• The optical engineer worked to achieve perfect achromatism in the new microscope design.
• Achromatism is essential for high-quality astronomical observations.