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ambient air standard

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noun
the highest concentration of a specific air pollutant at a particular outdoor location, in a specified unit of time, that is not considered hazardous to humans: The ambient air standard for gas X is 3 parts per million per hour.
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Origin of ambient air standard

First recorded in 1970–75

Words nearby ambient air standard

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use ambient air standard in a sentence

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