Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A silvery-white, soft, ductile, rare-earth element occurring in monazite and bastnaesite and used to dope glass and plastics for lasers and to absorb neutrons in research. Europium oxides provide important phosphors in cathode-ray tubes and low-energy lighting applications. Atomic number 63; atomic weight 151.96; melting point 822°C; boiling point 1,596°C; specific gravity 5.244; valence 2, 3. cross-reference: Periodic Table.
from The Century Dictionary.
- noun A supposed new element announced by Demarçay in 1901, obtained in very small quantity as oxid, sulphate, etc., from samar-skite and monazite.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) A metallic element of the rare-earth group (Lanthanide series), discovered spectroscopically by Demarcay in 1896. Symbol, Eu; atomic number 63; at. wt., 151.965 (C=12.011); valence = +2 or +3.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun a metallic chemical element (symbol Eu) with an
atomic number of 63.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a bivalent and trivalent metallic element of the rare earth group
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Now rare earth elements with exotic names such as europium and tantalum hold the key to hybrid cars, wind turbines and crystal-clear TV displays - that is, if a looming supply shortage doesn't stop innovation in its tracks.
The Oil Drum - Discussions about Energy and Our Future Leanan 2010
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Now rare earth elements with exotic names such as europium and tantalum hold the key to hybrid cars, wind turbines and crystal-clear TV displays - that is, if a looming supply shortage doesn't stop innovation in its tracks.
The Oil Drum - Discussions about Energy and Our Future Leanan 2010
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Now rare earth elements with exotic names such as europium and tantalum hold the key to hybrid cars, wind turbines and crystal-clear
Livescience.com 2010
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Now rare earth elements with exotic names such as europium and tantalum hold the key to hybrid cars, wind turbines and crystal-clear
Livescience.com 2010
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Now rare earth elements with exotic names such as europium and tantalum hold the key to hybrid cars, wind turbines and crystal-clear
Livescience.com 2010
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The insides of energy-efficient compact fluorescent light bulbs are coated with tiny amounts of two such elements, terbium and europium.
U.S. urged to safeguard supply of 'energy-critical elements' 2011
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The mine—perched 4,800 miles above sea level—had its heyday three decades ago, sometimes producing metals such as europium, which provided the red color for color television sets at the time.
Molycorp Pays Off for Buyout Believers Gregory Zuckerman 2011
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Magnets made with neodymium power cellphones and wind turbines, cerium is used to polish flat-screen monitors, and europium puts the red in cockpit displays and televisions.
Highfliers Find Lower Orbit Liam Pleven 2011
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The insides of energy-efficient compact fluorescent light bulbs are coated with tiny amounts of two such elements, terbium and europium.
U.S. urged to swiftly secure supplies of 'energy-critical elements' 2011
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Rare-earth phosphors such as europium and yttrium are in demand to tweak the color of compact fluorescent light bulbs and LED displays.
Malaysia Stalls New Project David Fickling 2011
oroboros commented on the word europium
Eu.
December 16, 2007