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.
QUIZZES
THIS PSAT VOCABULARY QUIZ IS PERFECT PRACTICE FOR THE REAL TEST
In our third teacher-created PSAT practice test there are new and unique vocabulary terms you may have never heard of! Can you guess what they mean?
Question 1 of 10
seclusion
Origin of ambient air standard
First recorded in 1970–75
Words nearby ambient air standard
ambidexterity, ambidextrous, Ambien, ambience, ambient, ambient air standard, ambiente, ambient music, ambient noise, ambiguity, ambiguous
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021