follow Dictionary.com

Write a Super Short Story to win an iPod!

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

Difficulty index for actinium series

Few English speakers likely know this word

Word Value for actinium

12
16
Scrabble Words With Friends