Verb (used with object) : to amalgamate two companies.    From Dictionary.com. 

Verb (used without object) : The three schools decided to amalgamate.    From Dictionary.com. 

Years ago I skimmed a book on the cultural history of the people of Quebec, and the author went to great lengths to emphasize the amalgamative power of the French Catholic identity in.    From Wordnik.com.  [Boing Boing] Reference