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airshed

[air-shed]
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noun Meteorology.
  1. a geographical area within which the air frequently is confined or channeled, with all parts of the area thus being subject to similar conditions of air pollution.
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Origin of airshed

First recorded in 1910–15; air1 + (water)shed
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for airshed

Historical Examples

  • On 7th June two of our airmen destroyed an airshed and a Zeppelin north of Brussels.

    The Childrens' Story of the War, Volume 4 (of 10)

    James Edward Parrott