mega
UK: ˈmɛɡə | US: ˈmɛɡə
adj. extremely large or great in size, quantity, or intensity
prefix denoting a factor of one million (10⁶) in the metric system
The prefix "mega" originates from the ancient Greek word μέγας (megas), meaning "great" or "large." It entered English via scientific and technical terminology, particularly in the metric system, where it denotes a millionfold (e.g., megabyte, megawatt). Over time, it also gained colloquial usage to emphasize something as exceptionally large or impressive (e.g., "mega-hit," "mega-success").
The company announced a mega-merger with its rival.
A megabyte equals one million bytes of data.
The concert was a mega-event, attracting thousands of fans.
Scientists measured the earthquake at 6.5 on the mega-scale.
She scored a mega-deal with the international client.