exclusion-principle

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:
1925–30

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World English Dictionary
exclusion principle
 
n
See Pauli exclusion principle

Collins English Dictionary - Complete & Unabridged 10th Edition
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Science Dictionary
exclusion principle   (ĭk-skl'zhən)  Pronunciation Key 
See Pauli exclusion principle.
The American Heritage® Science Dictionary
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