expulsion

ex|pul|sion /ɪksp'ʌlʃ^ən/ (expulsions)
1 [N-VAR] usu with supp
Expulsion is when someone is forced to leave a school, university, or organization.
Her hatred of authority led to her expulsion from high school.
...the high number of school expulsions...
2 [N-VAR] usu with supp
Expulsion is when someone is forced to leave a place. (FORMAL)
...the expulsion of Yemeni workers.
...a new wave of mass expulsions.
3 [N-UNCOUNT] usu with supp
Expulsion is when something is forced out from your body. (FORMAL)
...their expulsion from the digestive tract.