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[air-shed] /ˈɛərˌʃɛd/
noun, Meteorology
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.
Origin of airshed
1910-15; air1 + (water)shed Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for airshed
  • airshed and watershed boundaries on the map can be clicked on or off in the legend to the left of the map.
  • Nonattainment designations are based on monitored concentrations within an airshed.
  • The coverage of the airshed still needs to be figured out in more detail and will depend on the goal of the study.

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