metastable state

in nuclear chemistry
https://doi.org/10.1351/goldbook.M03875
An isomeric state in an energy state higher than the ground state.
Source:
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1546 [Terms] [Paper]
Citation: 'metastable state' 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.M03875 RIS BibTex EndNote
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