exclusion principle

noun

Physics.

1. 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.

exclusion principle

noun

1. See Pauli exclusion principle

exclusion principle

1. See Pauli exclusion principle

Word History and Origins

Origin of exclusion principle¹

First recorded in 1925–30