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2 definitions found
 for petabyte
From WordNet (r) 3.0 (2006) :

  petabyte
      n 1: a unit of information equal to 1000 terabytes or 10^15
           bytes [syn: petabyte, PB]
      2: a unit of information equal to 1024 tebibytes or 2^50 bytes
         [syn: petabyte, pebibyte, PB, PiB]

From The Free On-line Dictionary of Computing (30 December 2018) :

  petabyte
  
      (PB) A unit of data equal to one quadrillion bytes
     but see binary prefix for other definitions.  A petabyte is
     10^15 bytes or 1000^5 bytes or 1000 terabytes.
  
     As of 2013-11-05, the Internet Archive Wayback Machine
     contains almost two petabytes of data.
  
     A petabyte is the amount of data that would be required to store a
     2000 by 1600 pixel image of every one of the 314 million people
     living in the USA in 2012.
  
     1000 petabytes are one exabyte.
  
     See prefix.
  
     (2007-09-13)
  

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