- Inactivation by light; e.g., as in the treatment of herpes simplex by local application of a photoactive dye followed by exposure to a fluorescent lamp.
* * *pho·to·in·ac·ti·va·tion .fōt-ō-(.)in-.ak-tə-'vā-shən n1) the retardation or prevention of a chemical reaction by radiant energy (as light) compare PHOTOCATALYSIS2) the inactivation of a substance by radiant energy (as light) compare PHOTOACTIVATION
* * *pho·to·in·ac·ti·va·tion (fo″to-in-ak″tĭ-vaґshən) inactivation, as of complement, by light.
Medical dictionary. 2011.
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