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photoluminescence(fō″tō-lū-mĭ-nĕs′ĕns) [″ + L. lumen, light]
The power of an object to become luminescent when acted on by light.
Medical Dictionary, © 2009 Farlex and Partners
Emission of light by certain substances resulting from the absorption of energy (e.g. from electrical fields, chemical reaction, or other light), which is not due to a rise in temperature (unlike incandescence). The emitted radiation is characteristic of the particular substance. When the light emitted is due to exposure to a source of light the process is usually called photoluminescence. When the light emitted is due to either a high-frequency discharge through a gas, or to an electric field through certain solids such as phosphor which is used in fluorescent lamps, television picture tubes, etc., it is called electroluminescence. See bioluminescence; fluorescence; incandescence; fluorescent lamp; phosphorescence.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann