The spontaneous transformation of a nuclide into one or more different nuclides, accompanied by either the emission of particles from the nucleus, nuclear capture or ejection of orbital electrons, or fission. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Semantic type(s): Natural Phenomenon or Process
MeSH record created: 01/01/1999
MeSH record revised: 08/07/2008