Definitions

1. verb

to remove the colours from, or to make colourless

“The process of bleaching the fabric achromatised its original hue.”

2. verb

to remove the colours from an optical system, so that it transmits only white light

“The scientists achromatised the lens to improve its optical properties.”

3. verb

to remove the colour from a material or object, so that it appears white or colourless

“The artist achromatised the painting to achieve a neutral background.”