The DICT Development Group

  gigabyte
      n 1: a unit of information equal to 1000 megabytes or 10^9
           (1,000,000,000) bytes [syn: gigabyte, G, GB]
      2: a unit of information equal to 1024 mebibytes or 2^30
         (1,073,741,824) bytes [syn: gigabyte, gibibyte, G,
         GB, GiB]

  gigabyte
  gig
  
      (GB or colloquially "gig") A unit of data equal to
     one billion bytes but see binary prefix for other definitions.
     A gigabyte is 1000^3 bytes or 1000 megabytes.
  
     A human gene sequence (including all the redundant codons)
     contains about 1.5 gigabytes of data.
  
     1000 gigabytes are one terabyte.
  
     See prefix.
  
     Human genome data content
     
  http://bitesizebio.com/articles/how-much-information-is-stored-in-the-human-genome/)">(http://bitesizebio.com/articles/how-much-information-is-stored-in-the-human-genome/).
  
     (2013-11-03)