phosphorescent

From phosphorus +‎ -escent.
It's interesting to note that phosphorus is not phosphorescent. Some phosphoric mixtures can be luminescent through chemical reactions, but none exhibit literal phosphorescence.[1]

phosphorescent (comparative more phosphorescent, superlative most phosphorescent)

1. Having the property of emitting light for a period of time after the source of excitation is taken away, e.g., in electrostatic storage tubes and cathode-ray tubes.
   • 1966 [1961], William S. Burroughs, The Soft Machine (The Nova Trilogy), New York: Grove Press, page 11:

     So he imports this special breed of scorpions and feeds them on metal meal and the scorpions turned a phosphorescent blue color and sort of hummed.

• phosphorescence
• phosphorescently

• phosphor
• phosphoresce
• phosphoroscope

phosphorescent (plural phosphorescents)

1. A phosphorescent substance.

From phosphore +‎ -escent.

• IPA^(key): /fɔs.fɔ.ʁɛ.sɑ̃/, /fɔs.fɔ.ʁe.sɑ̃/
• Rhymes: -ɛsənt

phosphorescent (feminine phosphorescente, masculine plural phosphorescents, feminine plural phosphorescentes)

1. phosphorescent

• luminescent

• “phosphorescent”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.