You use eventual to indicate that something happens or is the case at the end of a process or period of time. The eventual aim is reunification. = ultimate. happening at the end of a long period of time or after a lot of other things have happened (éventuel, from eventus ; EVENT)
expected to follow in the indefinite future from causes already operating; "hope of eventual (or ultimate) rescue"; "if this trend continues it is not reasonable to expect the eventual collapse of the stock market"