Definition of "discolour" [discolour]

• Alternative spelling of discolor. (verb)

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• "As they will discolour when cut, make sure you have a bowl of acidulated water on hand."
• "I don't know how much/if 99% isopropanol will discolour anything."
• "Affordable, beautifully presented classics "easy-to-read typographic design, sewn cloth bindings with top and tail bands and a silk ribbon-marker, acid-free paper which will not discolour with age, as well as substantial introductions by leading scholars and writers""