actinide series


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Related to actinide series: lanthanide series

actinide series

n
(Elements & Compounds) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ac′ti•nide se`ries

(ˈæk təˌnaɪd)
n.
the series of mostly synthetic radioactive elements whose atomic numbers range from 89 (actinium) through 103 (lawrencium).
[1940–45]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.actinide series - (chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrenciumactinide series - (chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
series - similar things placed in order or happening one after another; "they were investigating a series of bank robberies"
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References in periodicals archive ?
However, recent experiments show that hahnium has a number of chemical properties resembling those of protactinium, a naturally occuring element situated beside uranium in the so-called actinide series. Protactinium is a dangerous, highly toxic material that requires precautions similar to those used when handling plutonium.
From the above data, both Z = 57 and Z = 89 begin a sequence of f shells filling before d shells (Z = 57 is the beginning of the Lanthanide series and Z = 89 is beginning of the Actinide series).