photoionization

noun pho·to·ion·i·za·tion \ ˌfō-tō-ˌī-ə-nə-ˈzā-shən \

Definition of photoionization

: ionization (as in the ionosphere) of a molecule or atom caused by absorption of radiant energy

photoionize

play \ˌfō-tō-ˈī-ə-ˌnīz\ transitive verb

First Known Use of photoionization

1914

in the meaning defined above

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