• (a.) Luminescent by exposure to light waves.
Having the ability to become luminescent upon exposure to visible light. ... Origin: photo-+ L. Lumen, light ... (05 Mar 2000) ... 
Pho`to·lu`mi·nes'cent adjective [ Photo- + luminescent .] (Physics) Luminescent by exposure to light waves. -- 
Type: Term Pronunciation: fō′tō-lū′mi-nes′ĕnt Definitions: 1. Having the ability to become luminescent on exposure to visible light.
photoluminescence, photoluminescent 1. The emission of light from a substance as a result of the absorption of electromagnetic radiation. The frequency of the light emitted is lower than that which is absorbed. 2. Luminescence caused by visible light or by infra-red or ultraviolet radiation. 3. Luminescence caused by exposure to light. In lower ve...