Dictionary.com

photochemical smog

Save This Word!

noun Meteorology.
air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons, especially those in automobile exhaust.
QUIZ
GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!
Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?
Also called oxidant smog, smog.

Origin of photochemical smog

First recorded in 1957; photo- + chemical
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use photochemical smog in a sentence

Medical definitions for photochemical smog

photochemical smog

n.
Air pollution produced by the action of sunlight on hydrocarbons, nitrogen oxides, and other pollutants.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for photochemical smog

photochemical smog
[ fō′tō-kĕmĭ-kəl ]

See smog.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK