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Pronunciation: flor-es'ents

Definition: Emission of a longer wavelength radiation by a substance as a consequence of absorption of energy from a shorter wavelength radiation, continuing only as long as the stimulus is present; distinguished from phosphorescence, in which emission persists for a perceptible period of time after the stimulus has been removed.

See: photoelectric effect

[fluorspar + -escence, inchoative suffix]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.