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photochemical

American  
[foh-toh-kem-ik-uhl] / ˌfoʊ toʊˈkɛm ɪk əl /

adjective

  1. relating to or produced by the chemical action of light.


photochemical British  
/ ˌfəʊtəʊˈkɛmɪkəl /

adjective

  1. of or relating to photochemistry; involving the chemical effects of light

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Example Sentences

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But as we would find out, our smog — photochemical smog — made the air taste like poison and look like something you’d put out with the garbage.

From Los Angeles Times ● Mar. 26, 2026

Not the good, high-altitude ozone that shields us from dangerous UV light, but bad ozone, hovering right above ground level — stinking, brownish, grayish photochemical smog.

From Los Angeles Times ● Mar. 26, 2026

They targeted a photochemical reaction in which molecules absorb energy from photons and transfer it to a neighbor.

From Science Magazine ● May 30, 2024

Its high-energy UV radiation in particular is strongly absorbed by all materials and triggers photochemical reactions of the substances present in the air.

From Science Daily ● Apr. 10, 2024

The foregoing are only a few of the multitude of photochemical reactions and other effects of radiant energy.

From Artificial Light Its Influence upon Civilization by Matthew Luckiesh

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