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phosphorogen

noun
phos·​phor·​o·​gen | \fäˈsfȯrəjə̇n, -ˌjen\
plural -s

Definition of phosphorogen 

: a substance or group that produces or helps to produce phosphorescence or luminescence

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History and Etymology for phosphorogen

International Scientific Vocabulary phosphor- + -gen; perhaps originally formed as French phosphorogène

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