phosphorescencePronunciation: /ˌfɒsfəˈrɛs(ə)ns/Definition of phosphorescence noun [mass noun] light emitted by a substance without combustion or perceptible heat:the stones overhead gleamed with phosphorescence Physics the emission of radiation in a similar manner to fluorescence but on a longer timescale, so that emission continues after excitation ceases. Derivatives phosphorescent adjective phosphorescence in other Oxford dictionaries Definition of phosphorescence in the US English dictionary
