1. removing color from something; making something lose its color or become colorless
Usage: British spelling; American equivalent is 'decolorizing'; present participle or gerund form of 'decolorise'

Examples

• The strong sunlight was decolorising the fabric over time.
• Chlorine is effective at decolorising stains in laundry.
• The chemical process involves decolorising the raw material before refining.
• Prolonged exposure to heat was decolorising the paint on the walls.
• The bleach solution is decolorising the dye from the textile.