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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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

Ostrin reports the therapy can put the retina at risk of photochemical and thermal damage.

From Science Daily • Jan. 29, 2024

Contrary to most photochemical reactions, it appears that plant life utilize yellow, red, and infra-red energy more than the blue, violet, and ultra-violet.

From Artificial Light Its Influence upon Civilization by Luckiesh, Matthew

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