MERGE

[verb] - to (cause to) combine or join togetherThey decided to merge the two companies into one. [T]The country's two biggest banks are planning to merge in order to fight off competition from abroad. [I]The Liberals and the Social Democrats merged in 1987 to form the Liberal Democrats. [I]Pink, blue and orange colours merged in the evening sky. [I]After a while the narrow track merges with a wider path. [I]Merge is also US for filter in.