- This dentine is darker than enamel, so teeth appear stained and discoloured.
- As a nation of tea and coffee drinkers, our teeth take a battering and frequently end up stained or discoloured.
- Aged vinegar acquires an increasingly brown colour as enzymes discolour compounds from the original fruit.
Late Middle English: from Old French descolorer or medieval Latin discolorare, from des-, dis- (expressing reversal) + Latin colorare 'to color'.
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