definition pré-emptive
preÂ·empÂ·tive. adj. 1. a. Undertaken or intended to deter or prevent an anticipated, usually unpleasant situation or occurrence: The two companies organized a preemptive alliance against a possible takeover by another firm.. preemptive-designed or having the power to deter or prevent an anticipated situation or occurrence; a preemptive business offer. pre-emptive. preventative, preventive-tending to prevent or hinder.