1. A unit of digital information equal to one quadrillion bytes, or approximately 1,000 terabytes.
Usage: computing; abbreviation: PB

Examples

• Modern data centers store multiple petabytes of information.
• A petabyte is large enough to hold the entire Library of Congress many times over.
• Cloud storage companies manage petabytes of user data daily.
• The research facility processes petabytes of scientific data each year.
• Streaming services require petabytes of storage for their video libraries.