defuser/diːˈfjuːzə(ɹ)/EtymologyFrom defuse + -er.defuser means one who, or that which, defuses. Lexicurio rates it Sui generis — a strength score of 87 out of 100.defuser is pronounced /diːˈfjuːzə(ɹ)/.nounOne who, or that which, defuses.