A prefix meaning one million or extremely large. Used as slang to mean very big, impressive, or excellent.
From Greek 'megas' meaning 'great, large.' Adopted into scientific terminology in the metric system to denote multiplication by one million, then popularized in general usage during the 1980s.
While 'mega' scientifically means exactly one million, in popular culture it became the ultimate superlative of the 1980s, spawning everything from 'mega-hit' to 'mega-bucks.' It's fascinating how a precise mathematical term evolved into casual slang for 'awesome' or 'huge.'
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