follow Dictionary.com

Why turkey has the same name as Turkey

actinium series

noun, Chemistry
1.
the radioactive series that starts with uranium 235 and ends with a stable isotope of lead of mass number 207.
Origin
1955-1960
1955-60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for actinium series
  • These are the uranium series, the thorium series, and the actinium series.
  • The majority of these can be grouped into the uranium series, the actinium series, and the thorium series.
British Dictionary definitions for actinium series

actinium series

noun
1.
a radioactive decay series that starts with uranium-235 and ends with lead-207
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
Cite This Source

Word of the Day

Word Value for actinium

12
16
Scrabble Words With Friends