From Wiktionary, the free dictionary
From mega- + finance.
megafinance (uncountable)
- High finance: finance involving very large scales and sums of money
2001, Wendy Dobson, Gary Hufbauer, World Capital Markets[1], →ISBN, page 103:The 1999 merger between Citibank (banking) and Travelers (insurance) created the model for megafinance and confirmed new challenges for supervisors.
