Main Entry: pho·to·lu·mi·nes·cence

Pronunciation: \ˌfōt-ō-ˌlü-mə-ˈnes-^ən(t)s\

Function: noun

: luminescence in which the excitation is produced by visible or invisible light

—pho·to·lu·mi·nes·cent \-ˈnes-^ənt\ adjective