petabyte

[ pet-uh-bahyt ]
/ ˈpɛt əˌbaɪt /

noun

250 bytes, or 1,024 terabytes.
(loosely) 1015 or a million billion bytes. Symbol: PB

Origin of petabyte

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for petabyte

petabyte
/ (ˈpɛtəˌbaɪt) /

noun

computing 10 15 or 2 50 bytes
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for petabyte

petabyte
[ pĕtə-bīt ]

A unit of computer memory or data storage capacity equal to 1,024 terabytes (250 bytes).
One quadrillion bytes. See Note at megabyte.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.