Definition of photoionization in English:

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Pronunciation: /ˌfəʊtəʊˌʌɪənʌɪˈzeɪʃ(ə)n/
(also photoionisation)


[mass noun] Physics
Ionization produced in a medium by the action of electromagnetic radiation.
Example sentences
  • Firstly, there is no charge separation or corresponding Coulomb attraction barrier, because the electron is ejected and hydrated in the bulk directly by photoionization.
  • Moreover, this spectrum is strikingly similar to the terminal spectrum measured after photoionization of the isolated PYP chromophore in solution.
  • T-rays have low photon energies and will not cause harmful photoionization in biological tissues.

For editors and proofreaders

Line breaks: photo|ion¦iza¦tion

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