Definitions

1. verb

to remove or destroy the color of something

“The strong chemicals will decolor the fabric in a matter of minutes.”

2. verb

to remove color from a document or drawing, especially by scanning or copying it in black and white

“The artist had to decolor her original painting to make a copy for the museum.”

3. noun

a substance that removes color from another substance

“The decoloring agent used in the production of white paper is a mixture of hydrogen peroxide and sodium hydroxide.”