Home › Words › I › isomantleisomantleisomantle · noun — synonym of heating mantle.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, isomantle ranks #30,059 of 43,042 for Qualifying.EtymologyIso- + mantle.nounSynonym of heating mantleDefinitions & examples from Wiktionary (CC BY-SA 3.0).