Definition of "fluorescing" [fluorescing]

• Present participle of fluoresce. (verb)

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• "A waitress passed by with a test tube rack filled with shooters, their bright colours fluorescing in the ultra violet lights and he reflexively flinched away."
• "Traffic cones and highlighter pens are just two everyday examples of fluorescing objects that humans can detect without any equipment."
• "Above ground people can usually pick up other fluorescing objects using ultra violet lights."