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 ?
The daily Etemad carried an interview with Faezeh Hashemi, the late president's daughter, who said government authorities told the family that an autopsy showed Rafsanjani's body contained 10 times as much polonium as normal.
He took a sample of muscle from the right thigh to test for radioactive polonium, a "very hazardous" recovery operation.
In her highly readable Polonium in the Playhouse, Linda Carrick Thomas sheds light on a deliciously eccentric piece of WWII home-front history -- the transformation of a private estate in a wealthy neighborhood of Dayton, Ohio, into a laboratory for the Manhattan Project, the program for developing the atomic bomb.
He worked for Public Health England at the Atomic Energy Research Establishment in Harwell, Oxon, and was responsible for a contract with the US measuring polonium in ex-Soviet nuclear workers.
He died three weeks after Polonium 210 was put in his cup of tea.
In 2012, Yasser Arafat's widow Suha Arafat claimed her husband had been murdered after the toxic chemical polonium was found on his belongings.
Les experts mandates par les juges francais ont a deux reprises ecarte la these de l'empoisonnement, estimant que la presence dans l'environnement exterieur d'un gaz radioactif naturel, le radon, expliquerait les fortes quantites de polonium enregistrees dans sa sepulture et sur sa depouille.
Mr Litvinenko died aged 43 three weeks after he drank tea laced with polonium 210 at the Millennium Hotel in Mayfair, central London.
In his conclusions published yesterday, inquiry chairman Sir Robert Owen wrote: "I am sure that Mr Lugovoi and Mr Kovtun placed the polonium 210 in the teapot at the Pine Bar on November 1 2006.
Maybe it was leaking and polonium accumulated in his body gradually.
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.
The Swiss report was a detailed, 107-page, professional report talking in detail about the presence of polonium on Arafat's clothes," Suha said.