contingent

Being determined by conditions or circumstances that follow.

“arms sales contingent on the approval of congress”

Possible but not certain to occur.

“they had to plan for contingent expenses”

Uncertain because of uncontrollable circumstances.

“the results of confession were not contingent, they were certain”

A temporary military unit.

“the peacekeeping force includes one British contingent”

A gathering of persons representative of some larger group.

“each nation sent a contingent of athletes to the Olympics”