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photodissociation

American

[foh-toh-di-soh-see-ey-shuhn, -shee-] / ˌfoʊ toʊ dɪˌsoʊ siˈeɪ ʃən, -ʃi- /

noun

the dissociation or breakdown of a chemical compound by radiant energy.

Etymology

Origin of photodissociation

First recorded in 1920–25; photo- + dissociation

Example Sentences

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See Examples For:

photodissociation

The Horsehead Nebula is a well-known photodissociation region, or PDR.

From Science Daily ● Apr. 30, 2024

Theoretically, there could have been some production of oxygen by photodissociation of water vapor in ultraviolet light, but not much.

From "The Lives of a Cell" by Lewis Thomas

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023