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Phosphorescence

ˌfɒsfəˈrɛsn(t)s

Phosphorescence definitions
noun
phosphorescence
  1. light emitted by a substance without combustion or perceptible heat

    "the stones overhead gleamed with phosphorescence"

    • the emission of radiation in a similar manner to fluorescence but on a longer timescale, so that emission continues after excitation ceases