definitive
/di-ˈfi-nə-tiv/
adjective
serving to provide a final solution or to end a situation
authoritative and apparently exhaustive
serving to define or specify precisely
a definitive victory
conclusive decisive determinative definitive mean bringing to an end. conclusive applies to reasoning or logical proof that puts an end to debate or questioning. decisive may apply to something that ends a controversy, a contest, or any uncertainty.
noun
a postage stamp issued as a regular stamp for the country or territory in which it is to be used : a definitive postage stamp
noun
the host in which the sexual reproduction of a parasite takes place