definitions

ambient air standard

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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Nearby words

ambidexterity, ambidextrous, ambien, ambience, ambient, ambient air standard, ambient music, ambient noise, ambiente, ambiguity, ambiguous

Origin of ambient air standard

First recorded in 1970–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019