1. a chemical reduction reaction caused or accelerated by light energy, commonly used in photography and chemistry to convert silver salts or other compounds to their reduced forms
Usage: technical; chemistry and photography

Examples

• Photoreduction of silver halide crystals is the fundamental process behind traditional film photography.
• The chemist studied photoreduction reactions to develop more efficient solar energy conversion methods.
• In the darkroom, photoreduction occurs when light strikes the photographic emulsion.
• Photoreduction can be used to synthesize metal nanoparticles from metal salt solutions.
• The rate of photoreduction depends on the wavelength and intensity of the incident light.