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English definition of “mega-”

mega-

prefix uk   /meɡ.ə-/ us  

mega- prefix (NUMBER)

science 1,000,000 times the stated unit: a megawatt a megabyteMeasurements in general

mega- prefix (BIG/GOOD)

informal large in amount or size: He's mega-rich.Big and quite bigEnormous
(Definition of mega- prefix from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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