Organizations is a alternative form of organisations.
As nouns the difference between organisations and organizations
is that organisations is plural of lang=en while organizations is plural of lang=en.
organisations
English
Alternative forms
* organizations
Noun
(head)
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organizations
English
Alternative forms
* organisations (note: many in the Commonwealth, especially Canadians, as well as Oxford University Press and many British publishers prefer the 'z'-spelling.)
Noun
(head)