the act, process of instituting or being instituted; (a building of) an organization with a social purpose, e.g. an orphanage
organization
Cases of word usage
1) (a part of) a hospital or small institution where medical advice and treatment are given (clinic)
2) a room for sleeping with several beds, e.g. in a school or institution (dormitory)
3) a person who gives her or his name to a place or institution (eponym)
4) (GB) a person who holds a university degree; (US) a person who has completed a course at an educational institution (graduate)
5) a hospital (the usual word); (in an institution etc) a room used for people who are ill or injured (infirmary)
6) a person living in a prison or other institution (inmate)
7) an institution for educating children (school)
8) (the colleges, buildings etc of) an institution for advanced teaching, conferring degrees and engaging in academic research (university)