amalgamation
noun [ C or U ]
uk/əˌmælɡəˈmeɪʃən/ usthe combining of separate organizations to form a larger organization or group, or an organization or group formed in this way:
amalgamation of sth The association was formed by the amalgamation of several regional environmental organizations.
The company began as an amalgamation of small family firms.
See also
horizontal amalgamation
vertical amalgamation