Home › Words › S › synchroptersynchroptersynchropter · noun — A helicopter that has a pair of intermeshing rotors.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, synchropter ranks #25,629 of 42,858 for Qualifying.EtymologyFrom synchro- + -pter.nounA helicopter that has a pair of intermeshing rotors.Definitions & examples from Wiktionary (CC BY-SA 3.0).