Expulsion (noun)

1. The act of expelling or driving out someone or something.
2. The act of expelling gas, liquid, or other substance from the body.
3. The act of ejecting or forcing out a substance from a container.
4. The act of banning or dismissing someone from a school, organization, or place of employment.

Origin:

Late middle english: from latin expulsio(n-), from expellere "drive out".

Examples:

1. The expulsion of the students from the university was due to their involvement in illegal activities.
2. The sudden expulsion of gas from the volcanic eruption caused a loud explosion.
3. The expulsion of air from the lungs was audible as he spoke.
4. The expulsion of the member from the club was a result of their disruptive behavior.
5. The expulsion of the contents of the bottle was aided by the pressure build-up inside.