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photodissociation

noun

pho·​to·​dis·​so·​ci·​a·​tion ˌfō-tō-di-ˌsō-sē-ˈā-shən How to pronounce photodissociation (audio)
-shē-
: dissociation of the molecules of a substance (such as water) caused by absorption of radiant energy
photodissociate verb

Word History

First Known Use

1907, in the meaning defined above

Time Traveler
The first known use of photodissociation was in 1907

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