1.Definition: a custom that for a long time has been an important feature of some group or society

"The institution of marriage", "The institution of slavery", "He had become an institution in the theater"

Category: General

2.Definition: a hospital for mentally incompetent or unbalanced person

Related Noun(s):asylum

Category: Objects

3.Definition: an establishment consisting of a building or complex of buildings where an organization for the promotion of some cause is situated

Category: Objects

4.Definition: an organization founded and united for a specific purpose

Related Noun(s):establishment

Category: General

5.Definition: the act of starting something for the first time; introducing something new

Related Noun(s):creation, foundation, initiation, innovation, instauration, introduction, origination

Category: General