photoinactivation
noun
pho·to·in·ac·ti·va·tion
| \ ˌfōt-ō-(ˌ)in-ˌak-tə-ˈvā-shən
\
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Medical Definition of photoinactivation
1
: the retardation or prevention of a chemical reaction by radiant energy (as light) — compare photocatalysis
2
: the inactivation of a substance by radiant energy (as light) — compare photoactivation