Home › Words › R › radioethanolradioethanolradioethanol means radioactive ethanol (labelled with radioactive carbon).Among words judged in Lexicurio's Arena, radioethanol ranks #30,650 of 42,752 for Qualifying.EtymologyFrom radio- + ethanol.nounradioactive ethanol (labelled with radioactive carbon)Definitions & examples from Wiktionary (CC BY-SA 3.0).