Medicare is a social insurance program that serves more than 44 million enrollees (as of 2008). The program costs about $432 billion, or 3.2% of GDP, in 2007.
The definition of an institution is an established custom or practice, or a group of people that was formed for a specific reason or a building that houses the group of people. 1  Marriage is an example of a cultural institution. 2  A town council is an example of an institution of government.
of, relating to, or established by institution. 2. of or relating to organized establishments, foundations, societies, or the like, or to the buildings devoted to their work. 3. of the nature of an institution. 4. characterized by the blandness, drabness, uniformity, and lack of individualized attention attributed to large institutions that serve many people: