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zettabyte

[zet-uh-bahyt]
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noun Computers.
  1. 270 bytes; 1024 exabyte.
  2. (loosely) 1021 or one sextillion bytes; 1000 exabytes. Symbol: ZB

Origin of zettabyte

First recorded in 1990–95; zetta- + byte
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for zettabyte

zettabyte

noun
  1. computing 10 21 or 2 70 bytes

Word Origin

C20: probably from Italian sette seven
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