Dictionary
photoionization
noun pho·to·ion·i·za·tion \-ˌī-ə-nə-ˈzā-shən\
Definition of PHOTOIONIZATION
: ionization (as in the ionosphere) of a molecule or atom caused by absorption of radiant energy
— pho·to·ion·ize \-ˈī-ə-ˌnīz\ transitive verb
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First Known Use of PHOTOIONIZATION
1914
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