1. a very large merger or consolidation of two or more major companies or organizations
Usage: informal; business/finance context

Examples

• The megamerger between the two telecommunications giants created the largest company in the industry.
• Analysts predicted that the megamerger would result in significant job losses.
• The proposed megamerger faced regulatory scrutiny from antitrust authorities.
• Shareholders voted in favor of the megamerger despite concerns about integration challenges.
• The megamerger was valued at over $100 billion, making it one of the largest deals of the decade.
• Industry experts debated whether the megamerger would ultimately benefit consumers.