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spark arrester

noun
1.
a device, consisting of wire netting or other material, used to stop or deflect sparks thrown from an open fireplace, a smokestack, or the like.
2.
Electricity. a device to reduce sparking at contacts where a circuit is opened and closed.
Origin
1825-1835
1825-35, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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spark-arrester in Science
spark arrester
  (spärk)   
  1. A device designed to keep sparks from escaping, as at a chimney opening or where materials are being welded.

  2. A device used to control or curtail electric sparking at a point where a circuit is made or broken.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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11
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