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exclusion principle

noun, Physics.
the principle that in any system described by quantum mechanics no two identical particles having spin equal to half an odd integer can be in the same quantum state: first postulated for the electrons in atoms.
Compare fermion.
Origin of exclusion principle
1925-30 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for exclusion principle
  • The problem with your exclusion principle argument is that it only applies to the physical properties of the system.
British Dictionary definitions for exclusion principle

exclusion principle

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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exclusion principle in Science
exclusion principle
See Pauli exclusion principle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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