From Longman Business Dictionary
acquisitionac·qui·si·tion /ˌækwəˈzɪʃən/ nounFINANCE1[countableC, uncountableU] when one company buys another one, or part of another onethe group’s acquisition of 85 stores in California
2[countableC] a company or part of a company that is bought by another companyThe group’s latest acquisition is a sportswear firm.
→ bootstrap acquisition → bust-up acquisition