mega-

  1. Prefix.  (context, originally) Very large, great. Denoting a size larger than usual.
  2. Prefix.  In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by one million (106.) SI Symbol: M, computing abbreviation: Mi.
  3. Prefix.  (computing) Multiplying the unit to which it is attached by 220 (= 1,048,576, the binary round number closest to a million).
  4. Prefix.  (context, computing, marketing) Multiplying the unit to which it is attached by 210 × 103 (= 1024,000, the binary round number closest to thousand).

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This entry was last updated on RefTopia from its source on 3/20/2012.