noun Computers.
1024 (2 10 ) bytes.
(loosely) 1000 bytes. Symbol: K, KB

1965–70; kilo- + byte Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
kilobyte (ˈkɪləˌbaɪt)
computing See also kilo- KB, Abbreviation: kbyte 1024 bytes

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
kilobyte   (kĭl'ə-bīt')  Pronunciation Key 
  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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

kilobyte definition

(KB) 2^10 = 1024 bytes.
See prefix.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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Example sentences
The cost of storing or transmitting a kilobyte of data really is now too cheap to meter.
There's only one catch: you don't get to use a computer or a single kilobyte of network bandwidth.
However, it can also be used on desktop systems to represent data at the kilobyte level.
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