Establishment (noun)

1. The process of founding or setting up something.
2. A company, institution, or organization that has been set up or established, especially a long-established one.
3. The people and organizations in a society or group that have power and influence and that form its social and political structure.

Origin:

Late 16th century (in the sense "a putting into operation, a founding, a setting up"): from old french establissement, from establir "to establish", based on latin stabilire.

Examples:

1. The establishment of this university took many years of planning and hard work.
2. The restaurant is a well-established establishment in the city.
3. The political establishment is resisting change.
4. She has worked for the same establishment for 25 years.
5. The establishment of a new school is always a complex task.