establishment

the persons (or committees or departments etc.) who make up a body for the purpose of administering something

“he quickly became recognized as a member of the establishment”

an organization founded and united for a specific purpose

the cognitive process of establishing a valid proof

the process by which a plant or animal becomes established in a new habitat

the act of forming or establishing something

“it was the establishment of his reputation”

any large organization

a public or private structure (business or governmental or educational) including buildings and equipment for business or residence