(~s)
Frequency: The word is one of the 1500 most common words in English.
Note: in BRIT, also use 'organisation'
1.
An ~ is an official group of people, for example a political party, a business, a charity, or a club.
Most of these specialized schools are provided by voluntary ~s.
...a report by the International Labour Organisation.
N-COUNT: oft in names
2.
The ~ of an event or activity involves making all the necessary arrangements for it.
...the exceptional attention to detail that goes into the organisation of this event...
Several projects have been delayed by poor organisation.
N-UNCOUNT
3.
The ~ of something is the way in which its different parts are arranged or relate to each other.
I am aware that the ~ of the book leaves something to be desired.
N-UNCOUNT: usu with supp, oft N of n