establishment establishment /ɪˈstæblɪʃmənt/

noun

1. () The act of forming or establishing something  ( organisation [British] , organization , constitution , establishment , formation )
   the act of forming or establishing something
    The constitution of a PTA group last year
   the constitution of a PTA group last year
    It was the establishment of his reputation
   it was the establishment of his reputation
    He still remembers the organization of the club
   he still remembers the organization of the club
   
2. () An organization founded and united for a specific purpose  ( establishment , institution )
   an organization founded and united for a specific purpose
     The university is a respected institution of higher education.
   The university is a respected institution of higher education.
   
3. () A public or private structure (business or governmental or educational) including buildings and equipment for business or residence  ( establishment )
   a public or private structure (business or governmental or educational) including buildings and equipment for business or residence
    The new restaurant quickly became a popular establishment in town.
   The new restaurant quickly became a popular establishment in town.
   
   
4. () The persons (or committees or departments etc.) who make up a body for the purpose of administering something  ( governance , governing body , organisation [British] , administration , brass , establishment , organization , admin [Informal] )
   the persons (or committees or departments etc.) who make up a body for the purpose of administering something
    He claims that the present administration is corrupt
   he claims that the present administration is corrupt
    The governance of an association is responsible to its members
   the governance of an association is responsible to its members
    He quickly became recognized as a member of the establishment
   he quickly became recognized as a member of the establishment
   
5. () Any large organization  ( establishment )
   any large organization
   
6. The cognitive process of establishing a valid proof  ( establishment , validation )
   the cognitive process of establishing a valid proof
   
7. (ecology) the process by which a plant or animal becomes established in a new habitat  ( ecesis , establishment )
   (ecology) the process by which a plant or animal becomes established in a new habitat