photoconductivity

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pho·to·con·duc·tiv·i·ty / ˌfōtōˌkändəkˈtivitē/ • n. increased electrical conductivity caused by the presence of light.DERIVATIVES: pho·to·con·duc·tive / -kənˈdəktiv/ adj.pho·to·con·duc·tor / -kənˈdəktər/ n.