Home › Words › R › radioluminescenceradioluminescenceradioluminescence means luminescence produced by bombardment with ionizing radiation.Among words judged in Lexicurio's Arena, radioluminescence ranks #2,709 of 42,752 for Qualifying.EtymologyFrom radio- + luminescence.nounluminescence produced by bombardment with ionizing radiationDefinitions & examples from Wiktionary (CC BY-SA 3.0).