Topic: MEDICINE
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in‧sti‧tu‧tion W1

1BM [countable] a large organization that has a particular kind of work or purpose
powerful institutions such as world banks
the Institution of Electrical Engineers
powerful institutions such as world banks
the Institution of Electrical Engineers2SS [countable] an important system of organization in society that has existed for a long time :
the institution of marriage/monarchy etc
The scandal threatened to undermine the institution of the Presidency.
The scandal threatened to undermine the institution of the Presidency.3 [countable] a building that people are sent to when they need to be looked after, for example old people or children with no parents - often used to show disapproval :
I was determined not to put my mother in an institution.
I was determined not to put my mother in an institution.4 [uncountable] when something is started or introduced, especially something relating to the law or politics
5 if a person, place, event etc is an institution, they have been an important part of a place for a very long time - often used humorously :
The British pub isn't just somewhere to drink - it's an institution.
be an institution
The British pub isn't just somewhere to drink - it's an institution.