europium

American  

[yoo-roh-pee-uhm, yuh-] / yʊˈroʊ pi əm, yə- /

noun

Chemistry.

1. a rare-earth metallic element whose salts are light pink. Eu; 151.96; 63.

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europium British  

/ jʊˈrəʊpɪəm /

noun

1. a soft ductile reactive silvery-white element of the lanthanide series of metals: used as the red phosphor in colour television and in lasers. Symbol: Eu; atomic no: 63; atomic wt: 151.965; valency: 2 or 3; relative density: 5.244; melting pt: 822°C; boiling pt: 1527°C

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europium Scientific  

/ y-rō′pē-əm /

1. A very rare, silvery-white metallic element that is the softest member of the lanthanide series. It is used in making color television tubes and lasers and as a neutron absorber in nuclear research. Atomic number 63; atomic weight 151.96; melting point 826°C; boiling point 1,439°C; specific gravity 5.259; valence 2, 3.

2. See Periodic Table

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Etymology

Origin of europium

First recorded in 1900–05; Europe + -ium

Example Sentences

The region holds deposits of many of the very elements China has placed under export controls: yttrium, scandium, erbium, europium, ytterbium, samarium, and lutetium.

From Barron's

Although you may not be familiar with the names of these rare earths - like neodymium, yttrium and europium - you will be very familiar with the products that they are used in.

From BBC

Stars dating back to the early universe contain r-process elements such as europium, suggesting the process began early.

From Science Magazine

Third, they wanted a large separation between individual europium ions to limit unintended interactions.

From Science Daily

A water-soluble, luminescent europium complex enables evaluation of malignancy grade in model glioma tumor cells.

From Science Daily