thorium


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Related to thorium: thorium reactor

tho·ri·um

 (thôr′ē-əm)
n. Symbol Th
A radioactive silvery-white metallic element that is recovered commercially from monazite. Its longest-lived isotope, the only one that occurs naturally, is Th-232 with a half-life of 14.1 billion years and is used as a nuclear fuel. Thorium is used in magnesium alloys, and its oxide is widely used in gas mantles of Welsbach burners. Atomic number 90; atomic weight 232.038; melting point 1,750°C; boiling point 4,788°C; specific gravity 11.72; valence 4. See Periodic Table.

[After Thor.]

thorium

(ˈθɔːrɪəm)
n
(Elements & Compounds) a soft ductile silvery-white metallic element. It is radioactive and occurs in thorite and monazite: used in gas mantles, magnesium alloys, electronic equipment, and as a nuclear power source. Symbol: Th; atomic no: 90; atomic wt: 232.0381; half-life of most stable isotope, 232Th: 1.41 × 1010 years; valency: 4; relative density: 11.72; melting pt: 1755°C; boiling pt: 4788°C
[C19: New Latin, from Thor + -ium]
ˈthoric adj

tho•ri•um

(ˈθɔr i əm, ˈθoʊr-)

n.
a grayish white, lustrous, radioactive metallic element: used as a source of nuclear energy, in sun-lamp and vacuum-tube filaments, and in alloys. Symbol: Th; at. wt.: 232.038; at. no.: 90; sp. gr.: 11.7.
[< Swedish (1829); see Thor, -ium2]
thor•ic (ˈθɔr ɪk, ˈθɒr-) adj.

tho·ri·um

(thôr′ē-əm)
Symbol Th A silvery-white, radioactive metallic element of the actinide series. It is used for fuel in some nuclear reactors and for improving the high-temperature strength of magnesium alloys. The only naturally occurring isotope of thorium is also its most stable, having a half-life of 14 billion years. Atomic number 90. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thorium - a soft silvery-white tetravalent radioactive metallic elementthorium - a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
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.
radiothorium, thorium-228 - radioactive isotope of thorium with mass number 228
monazite - a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
thorite - a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite
Translations
торий
thorium
thorium
torio
toorium
torium
תוריום
torij
tórium
þórín
トリウム
thorium
toris
thorium
thorium
torij
torium
toryum

thorium

[ˈθɔːrɪəm] Ntorio m

thorium

n (Chem) → Thorium nt
References in periodicals archive ?
Since then observers have found thorium in other stars and, a decade ago, in the Ursa Minor dwarf galaxy (a member of the Local Group that's 225,000 light-years away).
For the use of thorium fuels, the reactor platforms that were looked at include LWRs, HWRs, HTRs, MSRs and Fast Reactors.
Thorium reactors destroy plutonium so decommissioning costs are a fraction of those from a uranium fuelled reactor.
We don't have huge deposits of uranium, but we have the largest reserve of thorium in the world, and we're developing thorium-based reactors which are completely unique and home-grown.
Approximately $222 million will be paid to EPA for cleanup of thorium contamination at the Welsbach Superfund site in Gloucester City, New Jersey.
Kirkburton's Michael Mallinson (centre) won the Thorium Throwdown CrossFit compe-|tition
Now a radical new technology based on thorium promises what uranium never delivered: abundant, safe and clean energy -- and a way to burn up old radioactive waste.
A programme will be developed to study howA thorium might be used as a possible fuel at nuclear power plants, in addition to other fuels usingA uranium and plutonium.
In order to avoid interference with other elements in wastewater, the experiments in this study were carried out using simulated synthetic aqueous solution (SSAS) of different thorium concentrations.
Get a detailed picture of the Mining of Uranium and Thorium Ores market;
The abundance of the element thorium throughout the Earth's crust promises widespread energy independence through Liquid Fluoride Thorium Reactor (LFTR) technology.
com/kirk-sorensen) stumbled upon a dust-covered volume published in 1958 detailing the research that was being conducted on thorium during the 1950s.