photoinactivation

noun
pho·​to·​in·​ac·​ti·​va·​tion | \ ˌfōt-ō-(ˌ)in-ˌak-tə-ˈvā-shən How to pronounce photoinactivation (audio) \

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

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