[mass noun]the action of extraditing a person accused or convicted of a crime (罪犯的)引渡 they fought to prevent his extradition to the US. 他们为竭力阻止将他引渡到美国。 [count noun]emergency extraditions. 紧急引渡。
语源
mid 19th cent.: from French, from ex- 'out, from' + tradition 'delivery'