dispositive

adjective

• relating to or bringing about the settlement of an issue or the disposition of property:such litigation will rarely be dispositive of any question
• (in Scots and US law) dealing with the disposition of property by deed or will:the testator had to make his signature after making the dispositive provisions
• (in US law) producing a final settlement or determination.
• dealing with the settling of international conflicts by an agreed disposition of disputed territories: a peace settlement in the nature of a dispositive treaty