polonium

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po·lo·ni·um

 (pə-lō′nē-əm)
n. Symbol Po
A radioactive metallic element, occurring naturally in small quantities as a product of radium disintegration and produced synthetically by bombarding bismuth or lead with neutrons. Most isotopes decay by alpha-particle emission; the most stable are Po-208 and Po-209, with half-lives of 2.9 years and 102 years, respectively. Po-210, with a half-life of 138.4 days, is the most readily available isotope and is extremely toxic. Atomic number 84; melting point 254°C; boiling point 962°C; specific gravity 9.20; valence 2, 4, 6. See Periodic Table.

[From Medieval Latin Polōnia, Poland (the native country of Marie Curie, who discovered this element along with her husband Pierre).]

polonium

(pəˈləʊnɪəm)
n
(Elements & Compounds) a very rare radioactive element that occurs in trace amounts in uranium ores. The isotope polonium-210 is produced artificially and is used as a lightweight power source in satellites and to eliminate static electricity in certain industries. Symbol: Po; atomic no: 84; half-life of most stable isotope, 209Po: 103 years; valency: –2, 0, 2, 4, or 6; relative density (alpha modification): 9.32; melting pt: 254°C; boiling pt: 962°C
[C19: New Latin, from Medieval Latin Polōnia Poland; named in honour of the Polish nationality of its discoverer, Marie Curie]

po•lo•ni•um

(pəˈloʊ ni əm)

n.
a radioactive chemical element discovered by Pierre and Marie Curie in 1898. Symbol: Po; at. no.: 84; at. wt.: about 210.
[< French, =polon- (< Medieval Latin Polonia Poland) + -ium -ium2]

po·lo·ni·um

(pə-lō′nē-əm)
Symbol Po A very rare, naturally radioactive, silvery-gray or black metallic element. It is produced in extremely small amounts by the radioactive decay of radium or the bombardment of bismuth or lead with neutrons. Atomic number 84. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.polonium - a radioactive metallic element that is similar to tellurium and bismuthpolonium - a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor
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.
Translations
полоний
polonium
polonium
polonio
poloonium
polonium
polonij
polónium
pólon
ポロニウム
polonium
polonis
polonium
polon
poloniu
polonium
polonij
polonium
polonyum

polonium

[pəˈləʊnɪəm] Npolonio m

polonium

n (Chem) → Polonium nt
References in periodicals archive ?
He died in London in 2006 after radioactive poison polonium 210 was slipped into a cup of green tea by Russian agents.
He died three weeks after Polonium 210 was put in his cup of tea.
Les magistrats etaient saisis de cette enquete depuis aout 2012, apres une plainte contre X deposee par Souha Arafat a la suite de la decouverte de polonium 210, substance radioactive hautement toxique, sur des effets personnels de son mari.
The inquiry into his death concluded that suspected killers Andrei Lugovoi and Dmitri Kovtun placed polonium 210 in a teapot at the hotel's Pine Bar.
Mr Litvinenko died aged 43 three weeks after he drank tea laced with polonium 210 at the Millennium Hotel in Mayfair, central London.
The French experts "maintain that the polonium 210 and lead 210 found in Arafat's grave and in the samples are of an environmental nature," Nanterre prosecutor Catherine Denis said.
Swiss, French and Russian forensics experts had taken samples from Arafat's body last year after an al Jazeera documentary claimed that his clothes showed high amounts of deadly polonium 210.
PARIS (TAP) - French forensic experts investigating the death of the late Palestinian leader Yasser Arafat have concluded that he died of natural causes, ruling out polonium 210 poisoning, according to reports.
Measurements of Polonium 210 and other radioactive substances taken from biological samples of the body are consistent with a natural environmental origin.
Scientists in Switzerland have now said: "Several tests on samples of bodily fluids contained an unexplained higher level of polonium 210, compared to control samples.
The report says: "Several samples containing body fluid stains (blood and urine) contained higher unexplained polonium 210 activities than the reference samples.
Published on Tuesday, 15 October 2013 10:48 Al Jazeera The Lancet One of the world's leading medical journals has supported the possibility that Yasser Arafat, the longtime Palestinian leader, was poisoned with theradioactive element polonium 210.