Precedent
(noun pres-i-du nt; adjective pri-seed-nt)
A legal decision or form of proceeding serving as an authoritative rule or pattern in future similar or analogous cases.
Any act, decision, or case that serves as a guide or justification for subsequent situations.
Going or coming before
To have higher rank than (someone or something else).
To go before, go in front of
An action, situation, or decision that has already happened and can be used as a reason why a similar action or decision should be performed or made.
Precedent Transaction Analysis is a valuation method in which the price paid for similar companies in the past is considered an indicator of a company's value. It creates an estimate of what a share of stock would be worth in the case of an acquisition.