mega- - definition and synonyms

prefix 

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/meɡə/
  1. 1
    science one million: used with some units of measurement

    a 2,000-megawatt power plant

     Synonyms and related words
     Synonyms and related words
  2. 2
    very large or important: used with some nouns

    Cruise is now a megastar.

     Synonyms and related words