单词	pre-empt
释义	pre-emptpre-empt, pre·empt /priˈempt/ verb [transitive] Word Origin WORD ORIGINpreempt Origin: 1800-1900 preemption (17-21 centuries), from Medieval Latin praeemere ‘to buy before’ Verb Table VERB TABLE pre-empt Simple Form Present I, you, we, they pre-empt he, she, it pre-empts Past I, you, he, she, it, we, they pre-empted Present perfect I, you, we, they have pre-empted he, she, it has pre-empted Past perfect I, you, he, she, it, we, they had pre-empted Future I, you, he, she, it, we, they will pre-empt Future perfect I, you, he, she, it, we, they will have pre-empted Continuous Form Present I am pre-empting he, she, it is pre-empting you, we, they are pre-empting Past I, he, she, it was pre-empting you, we, they were pre-empting Present perfect I, you, we, they have been pre-empting he, she, it has been pre-empting Past perfect I, you, he, she, it, we, they had been pre-empting Future I, you, he, she, it, we, they will be pre-empting Future perfect I, you, he, she, it, we, they will have been pre-empting 1to make what someone has planned to do or say unnecessary or ineffective by saying or doing something first:  The deal pre-empted a strike by rail workers.2American English to replace a television show with a special programme or report:  Regular programming was preempted by a report on the war.—pre-emption /-ˈempʃən/ noun [uncountable]
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