luminescence

lu·mi·nes·cence

noun \ˌlü-mə-ˈnes-^ən(t)s\

Definition of LUMINESCENCE

: the low-temperature emission of light produced especially by physiological processes (as in the firefly), by chemical action, by friction, or by electrical action; also : light produced by luminescence

—lu·mi·nesce \-ˈnes\ intransitive verb, lu·mi·nesced lu·mi·nesc·ing

—lu·mi·nes·cent \-^ənt\ adjective