preemptive

preemptivepreemptiveD.J.:[pri:ˈemptiv]K.K.:[priˈɛmptɪv]adj.1.■有先买权的,有强制收购权的,抢先的

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preemptive[pri'emptiv; ,pri:-]adj.1.■[美国英语]2.■优先购买权的；具有优先购买权的3.■抢先的；先发制人的4.■【桥牌】先发制人叫牌的 [亦作 pre-emptive]