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transitive or intransitive verb

  • (British) discolor
    Example sentences
    • 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.
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