photoionization

[ foh-toh-ahy-uh-nuh-zey-shuh n ]
/ ˌfoʊ toʊˌaɪ ə nəˈzeɪ ʃən /

noun Physics.

the phenomenon in which the absorption of electromagnetic radiation by an atom in a gas induces the atom to emit a bound electron and thereby become ionized.

Nearby words

  1. photogravure,
  2. photoheliograph,
  3. photoinactivation,
  4. photoinduced,
  5. photoinduction,
  6. photoisomerization,
  7. photojournalism,
  8. photokinesis,
  9. photolitho,
  10. photolithograph

Origin of photoionization

1910–15; photo- + ionization

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019