SINCE 1828
polonium
noun
po·lo·ni·um
| \ pə-ˈlō-nē-əm
\
\
Definition of polonium
: a radioactive metallic element that is similar chemically to tellurium and bismuth, occurs especially in pitchblende and radium-lead residues, and emits an alpha particle to form an isotope of lead — see Chemical Elements Table
Examples of polonium in a Sentence
Recent Examples on the Web
In 2006 Alexander Litvinenko, a Russian defector to the U.K., was poisoned in London with polonium from a Russian nuclear facility. — Michael B. Mukasey, WSJ, "The Russia Indictments: Why Now?," 16 July 2018 One of them was Andrei Lugovoi, who in 2006 slipped some radioactive polonium into the tea of Mr. Litvinenko in a Mayfair restaurant, London police say. — Alan Cullison, WSJ, "A Trio of Wealthy Russians Made an Enemy of Putin. Now They’re All Dead.," 10 Oct. 2018 The killers of Alexander Litvinenko, who died of polonium poisoning in 2006, left a trail of radiation across London. — The Economist, "A new Novichok poisoning in Britain," 5 July 2018 Russia has a track record: in London in 2006 its agents assassinated Alexander Litvinenko, another ex-spy, by slipping polonium into his tea. — The Economist, "Conspiracy theories from, and about, Russia," 14 Apr. 2018 In 2006, another former Russian spy, Alexander V. Litvinenko, was fatally poisoned in London with a radioactive element, polonium 210, an assassination that Britain contends was directed by Moscow, which Russia denies. — Michael Wolgelenter And Richard PÉrez-peÑa, New York Times, "Yulia Skripal Released From U.K. Hospital After Poisoning," 10 Apr. 2018 British forensic scientists were ultimately able to determine which Russian reactor the polonium had come from. — Tom Tugendhat, Time, "Russia Is Now a Rogue State. We Must Treat It Like One," 15 Mar. 2018 Other evidence includes intelligence that Russia has experimented with chemical agents for assassinations and previously targeted former Russian agents—including Alexander Litvinenko, poisoned with radioactive polonium in London in 2006. — The Editorial Board, WSJ, "Truth and Lies in Britain and Russia," 4 Apr. 2018 The attack evoked memories of the 2006 murder with polonium of Russian dissident Alexander Litvinenko in London, which was linked to Mr. Putin. — The Editorial Board, WSJ, "Vladimir Taunts the West," 15 Mar. 2018These example sentences are selected automatically from various online news sources to reflect current usage of the word 'polonium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for polonium
polonium
noun
po·lo·ni·um
| \ pə-ˈlō-nē-əm
\
\
Medical Definition of polonium
: a radioactive metallic element that is similar chemically to tellurium and bismuth, occurs especially in pitchblende and radium-lead residues, and emits an alpha particle to form an isotope of lead
—symbol Po
— see Chemical Elements Table
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