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rare earth metal
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rare-earth element
/
ˈrɛərˈɜrθ
/
Show Spelled
[
rair
-
urth
]
Show IPA
noun
Chemistry
.
any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons.
Also called
rare-earth metal.
Origin:
1955–60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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rare earth metal
American Heritage
Medical Dictionary
rare-earth element
n.
See
lanthanide
.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
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00:10
Rare earth metal
is always a great word to know.
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ninnyhammer
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gobo
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an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a fool or simpleton; ninny.
a fool or simpleton; ninny.
the offspring of a zebra and a donkey.
a chattering or flighty, light-headed person.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
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American Heritage
Science Dictionary
rare-earth element
(râr'ûrth')
Pronunciation Key
See
lanthanide
.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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