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The set of chemically related elements with properties similar to those of lanthanum, with atomic numbers from 57 to 71.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Chemistry) a class of 15 chemically related elements with atomic numbers from 57 (lanthanum) to 71 (lutetium)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
the series of rare-earth elements of atomic numbers 57 through 71 (lanthanum through lutetium).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||lanthanide series - the rare-earth elements with atomic numbers 57 through 71; having properties similar to lanthanum|
series - similar things placed in order or happening one after another; "they were investigating a series of bank robberies"
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