pre|emp|tive or pre-emp|tive «pree EHMP tihv», adjective.
1. of or having to do with preemption: »

preemptive purchase of land.

2. initiated before other launched beforehand: »

a preemptive war. The preemptive strike…would be a last-minute desperate attempt to destroy as much as possible of an enemy's forces because we were convinced that he was about to attack us (Bulletin of Atomic Scientists).

3. Finance. allowing stockholders to have first choice of purchasing newly issued stock of a company: »

They also defeated shareholder proposals for…pre-emptive rights on new financing (Wall Street Journal).

4. Cards. of or for preempting: »

a preemptive bid.

pre-emp´tive|ly, adverb.

Useful english dictionary. 2012.