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quantum bit

noun
1.
the fundamental unit of information in a quantum computer, capable of existing in two states, 0 or 1, simultaneously or at a different time.
Also called qubit [kyoo-bit] /ˈkyuˌbɪt/ (Show IPA).
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for qubit
  • The same holds true for a bit in a quantum computer, called a qubit.
  • The spin of an electron forms a quantum bit, also called a qubit.
British Dictionary definitions for qubit

qubit

/ˈkjuːbɪt/
noun
1.
(computing) a quantum bit
Word Origin
C20: from qu(antum) + bit4
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
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qubit in Science
qubit
  (ky'bĭt')   
See quantum bit.
quantum bit  
The smallest unit of information in a quantum computer. Unlike bits in classical systems, which are in one of two possible states labelled 1 and 0, a quantum bit exists in a superposition of these two states, settling on one or the other only when a measurement of the state is made. Also called qubit.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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