sootproof

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English

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Etymology

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From soot +‎ -proof.

Adjective

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sootproof (not comparable)

  1. Resistant to soot.
    • 1921, Chilton's Motor Age: Volume 39, Part 2[1], Chilton Company, page 128:
      A spark plug which will stay sootproof and give long service in any of the Ford cylinders, must be a specially built plug.
    • 1914, The Autocar: Volume 33[2], London: Iliffe, Sons & Sturmey Limited, page 648:
      [] only a sootproof plug is of any use to a Mathis owner.

Alternative forms

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