exclusion principle exclusion • exclusionary · · · Info · Definitions · Characters · · exclusion principle · · Text Common · · Latin · · Scripts 19 · · Length 6 · · Syllables Definitions · · · (noun) no two electrons or protons or neutrons in a given system can be in states characterized by the same set of quantum numbers. Synonyms: Pauli exclusion principle, exclusion principle. · · Noun Definition 1 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 x latin small letter x U+0078