dispositive
Pronunciation: /dɪsˈpɒzətɪv/
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

Origin:
late Middle English (in the sense 'contributory, conducive'): from Old French, or from medieval Latin dispositivus, from Latin disposit- 'arranged, disposed', from the verb disponere (see dispose)