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.
Also called
Pauli exclusion principle.
Compare
fermion.
Origin of exclusion principle
First recorded in 1925–30
Words nearby exclusion principle
exclude,
excluded middle,
excluding,
exclusion,
exclusion clause,
exclusion principle,
exclusionary rule,
exclusionism,
exclusionist,
exclusive,
exclusive brethren
British Dictionary definitions for exclusion principle
Scientific definitions for exclusion principle
exclusion principle
[ ĭk-sklōō′zhən ]
See Pauli exclusion principle.