Also especially British, de·col·or·ise.
Origin of decolorize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for decolorize
If the culture is too old the spores will all be free outside the rods, while if too young they will decolorize with the acid.The Fundamentals of Bacteriology
Charles Bradfield Morrey
The chlorine and oxygen will combine their action to decolorize the textile material.