Home › Words › T › trinuclearitytrinuclearitytrinuclearity means the quality of being trinuclear.Among words judged in Lexicurio's Arena, trinuclearity ranks #36,272 of 42,791 for Qualifying.EtymologyFrom trinuclear + -ity.nounThe quality of being trinuclear.Definitions & examples from Wiktionary (CC BY-SA 3.0).