photoactivation

noun pho·to·ac·ti·va·tion \ˌfōt-ō-ˌak-tə-ˈvā-shən\

Medical Definition of PHOTOACTIVATION

: the process of activating a substance by means of radiant energy and especially light; also : photocatalysis—compare photoinactivation 2

—pho·to·ac·ti·vate \-ˈak-tə-ˌvāt\ transitive verb, pho·to·ac·ti·vat·ed pho·to·ac·ti·vat·ing

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