photochemical

adjective
pho·to·chem·i·cal | \ˌfō-tō-ˈke-mi-kəl \

Definition of photochemical 

1 : of, relating to, or resulting from the chemical action of radiant energy and especially light photochemical smog

2 : of or relating to photochemistry photochemical studies

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Other Words from photochemical

photochemically \ˌfō-tō-ˈke-mi-k(ə-)lē \ adverb

Examples of photochemical in a Sentence

Recent Examples on the Web

The photochemical restoration edition will be available on DVD and Blu-ray this fall. Michael Phillips, chicagotribune.com, "Christopher Nolan's mission with '2001': Beyond the infinite, back to analog," 9 May 2018 The re-release of the 50-year-old film was accomplished through an entirely photochemical process overseen by Christopher Nolan. Charles Champlin, latimes.com, "'2001: A Space Odyssey' still blowing minds 50 years later," 17 May 2018 Scientists say rising temperatures from climate change will make smog tougher to control by boosting the photochemical reactions that generate ozone pollution. Tony Barboza, latimes.com, "Slowdown in emissions reductions could explain stalled progress on smog, study finds," 30 Apr. 2018 When the storm is continually hit by direct sunlight, however, those smoky haze particles within the storm from a photochemical reaction in the atmosphere, returning the north polar hexagon to a soft golden hue that resembles the rest of the planet. Jay Bennett, Popular Mechanics, "Farewell to the Greatest Space Mission of Our Time," 11 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photochemical.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of photochemical

1857, in the meaning defined at sense 1

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The first known use of photochemical was in 1857

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More Definitions for photochemical

photochemical

adjective
pho·to·chem·i·cal | \ˌfōt-ō-ˈkem-i-kəl \

Medical Definition of photochemical 

1 : of, relating to, or resulting from the chemical action of radiant energy and especially light photochemical smog

2 : of or relating to photochemistry photochemical studies

Other Words from photochemical

photochemically \-k(ə-)lē \ adverb

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