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lanthanide series

American  

noun

Chemistry.

  1. the series of rare-earth elements of atomic numbers 57 through 71 (lanthanum through lutetium).

lanthanide series British  

noun

  1. a class of 15 chemically related elements with atomic numbers from 57 (lanthanum) to 71 (lutetium)

"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

Etymology

Origin of lanthanide series

First recorded in 1940–45

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.