This is the Amalgamating process.
"An Introduction to Chemical Science"
R.P. Williams
The process of Amalgamating the claims and interests and merging them in one huge corporation was completed in 1885, chiefly by the skill and boldness of Mr. Cecil J. Rhodes, who had gone to Natal for his health shortly before 1870, and came up to Kimberley in the first months of the rush.
"Impressions of South Africa"
James Bryce
Bourjot had married in order that two important business houses should be united; for the sake of Amalgamating various interests she had been wedded to a man whom she did not know, and at the end of a week of married life she had felt all the contempt that a wife can possibly feel for a husband.
"Renée Mauperin"
Edmond de Goncourt and Jules de Goncourt