Oxidation reactions induced by light. Common processes are: 1, the loss of one or more electrons
from a chemical species as a result of
photoexcitation of that species; 2, the reaction of a substance with oxygen under the influence of
light. When oxygen remains in the product this latter process is also called
photooxygenation. Reactions in which neither the substrate nor the oxygen are electronically excited
are sometimes called photoinitiated oxidations.
Source:
PAC, 1996, 68, 2223
(Glossary of terms used in photochemistry (IUPAC Recommendations 1996))
on page 2264