Definitions for "Decay chain"
the series of decays that certain radioisotopes go through before reaching a stable form. For example, the decay chain that begins with Uranium-238 culminates in Lead-206, after forming intermediates such as Uranium-234, Thorium-230, Radium-226, and Radon-222. Also called the "decay series." Decay Chains
A series of radioactive decays leading to a stable nucleus.
A series of radionuclides each of which disintegrates into the next until a stable nuclide is reached