A pre-emption right, right of pre-emption, or first option to buy is a contractual right to acquire certain property newly coming into existence before it can be offered to any other person or entity.[1] It comes from the Latin verb emo, emere, emi, emptum, to buy or purchase, plus the inseparable preposition pre, before. A right to acquire existing property in preference to any other person is usually referred to as a right of first refusal.
Right of pre-emption. A potential buyer's contractual right to have the first opportunity to buy, at a specified price, if the seller chooses to sell within the contractual period. Also termed 'first option to buy'.
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