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kilobyte

[kil-uh-bahyt]
noun Computers.
  1. 1024 (210) bytes.
  2. (loosely) 1000 bytes. Symbol: K, KB

Origin of kilobyte

First recorded in 1965–70; kilo- + byte
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for kilobyte

kilobyte

noun
  1. computing 1024 bytesAbbreviation: KB, kbyte See also kilo- (def. 2)
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
Word Origin and History for kilobyte
n.

1970, from kilo- + byte.

Online Etymology Dictionary, © 2010 Douglas Harper
kilobyte in Science

kilobyte

[kĭl′ə-bīt′]
  1. A unit of computer memory or data storage capacity equal to 1,024 (that is, 210) bytes.
  2. One thousand bytes. See Note at megabyte.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.