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radioactive series

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noun Physics, Chemistry.
  1. a succession of elements initiated in the radioactive decay of a parent, as thorium or uranium, each of which decays into the next until a stable element, usually lead, is produced.

Origin of radioactive series

First recorded in 1920–25
Also called decay series.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for radioactive series

radioactive series

noun
  1. physics a series of nuclides each of which undergoes radioactive decay into the next member of the series, ending with a stable element, usually leadSee uranium series, neptunium series, thorium series, actinium series
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012