Term: degenerate orbitals
https://doi.org/10.1351/goldbook.DT07018

Definition:
Orbitals whose energy levels are equal in the absence of external fields. Any linear combination of the functions corresponding to a given set of degenerate orbitals serves as an equivalent representation of this set of orbitals.

Source: PAC, 1999, 71, 1919. 'Glossary of terms used in theoretical organic chemistry' on page 1933 (https://doi.org/10.1351/pac199971101919)

Citation: 'degenerate orbitals' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.DT07018

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