yttrium metal
nounChemistry.
any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups.
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British Dictionary definitions for yttrium metal
yttrium metal
noun
chem any one of a group of elements including yttrium and the related lanthanides, holmium, erbium, thulium, ytterbium, and 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
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