cerium


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Related to cerium: praseodymium, periodic table, Cerium Oxide, cerium nitrate

ce·ri·um

 (sîr′ē-əm)
n. Symbol Ce
A lustrous, iron-gray, malleable metallic element of the lanthanide series that occurs chiefly in the minerals monazite and bastnaesite, exists in four allotropic states, is a constituent of pyrophoric alloys, and is used in metallurgy and in the manufacture of glass, incandescent mantles, and hydrocarbon combustion catalysts. Atomic number 58; atomic weight 140.12; melting point 799°C; boiling point 3,443°C; specific gravity 6.77; valence 3, 4. See Periodic Table.

cerium

(ˈsɪərɪəm)
n
(Elements & Compounds) a malleable ductile steel-grey element of the lanthanide series of metals, used in lighter flints and as a reducing agent in metallurgy. Symbol: Ce; atomic no: 58; atomic wt: 140.115; valency: 3 or 4; relative density: 6.770; melting pt: 798°C; boiling pt: 3443°C
[C19: New Latin, from Ceres (the asteroid) + -ium]

ce•ri•um

(ˈsɪər i əm)

n.
a steel-gray, ductile metallic element of the rare-earth group found only in combination. Symbol: Ce; at. wt.: 140.12; at. no.: 58.
[1795–1805; Cer (es) + -ium2]

ce·ri·um

(sîr′ē-əm)
Symbol Ce A shiny, gray metallic element of the lanthanide series. It is easily shaped and in pure form will ignite if scratched with a knife. It is used in glass polishing and as a catalyst in self-cleaning ovens. Atomic number 58. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cerium - a ductile grey metallic element of the lanthanide seriescerium - a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
bastnaesite, bastnasite - a yellow-to-brown mineral that is a source of rare earth elements
gadolinite, ytterbite - a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium
monazite - a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
Translations
церий
cercér
cerium
cerio
tseerium
cerium
cerij
cérium
serín
セリウム
cerium
ceris
cerium
cer
ceriu
cér
cerij
cerium
seryum
References in periodicals archive ?
The technology is brilliant, combining a virtual balance sheet for broker-dealers with an elegant online trading environment," said Eldon Klaassen, Managing Director at Cerium Technology, who has been appointed Chairman of the Board.
for the realization of an international physics experiment, CEA plans to make Russia a radioactive source cerium 144 with an activity of between 3.
These price increases more than offset falls in the lower value cerium and lanthanum, which together make up just 14% of Ngualla's predicted revenue, leading to an overall increase of 22% in Ngualla's 'basket price'.
In 2010, a solid cast insert with equal parts bismuth and cerium proved successful in controlling the formation of chunky graphite in field trials at a number of metalcasting facilities across Europe.
To our knowledge, this is the first report on the presence of cerium dioxide and zinc compounds in the reproductive and edible portions of the soybean plant grown in farm soil with cerium dioxide and zinc oxide nanoparticles.
Neil King, trainer of Cerium "He's in very good order and he'll love the soft ground.
Dr Caroline Smith from the Natural History Museum, where some of it is being displayed, said: "Water, or fluids, have picked up the cerium and gone into gaps.
By contrast, cerium oxide stunted plant growth at all concentrations, "but most dramatically at the lowest level used," Holden says.
Blough and his colleagues at Marshall's Center for Diagnostic Nanosystems indicate there is a dose-dependent increase in the concentration of cerium in the liver of animals that had been exposed to the nanoparticles, which are only about 1/40,000 times as large as the width of a human hair.
Plasma from fasting heparinised blood was used and the experimental protocol was as follows (I) Plasma + phosphate buffered saline, (II) same as I + cholesterol substrate, (III) same as II + cerium 0.
Researchers found that adding just 1% of a rare earth element like cerium or ytterbium was enough to alter its mechanisms to increase conversion efficiency by 25% compared to conventional thermoelectrics.