photoelectric
adjective(pho-to-elec-tric)
involving, relating to, or utilizing any of various electrical effects due to the interaction of radiation (such as light) with matter
photoelectric
noun(pho-to-elec-tric)
an electronic device whose electrical properties are modified by the action of light
photoelectric
noun(pho-to-elec-tric)
the emission of free electrons from a metal surface when light strikes it