coperniciumn.

Brit.

/ˌkəʊpəˈnɪsɪəm/, U.S.

/ˌkoʊpərˈnɪsiəm/,

/ˌkoʊpərˈnɪʃiəm/

Origin: From a proper name, combined with an English element. Etymons: proper name Copernicus , -ium suffix.

Etymology: < the name of Nicolaus Copernicus (see Copernican adj.) + -ium suffix.

Chemistry.

A radioactive transuranic chemical element, atomic number 112, produced artificially. Symbol Cn.The element was first produced in 1996, and was provisionally known as element 112; IUPAC, the international body that approves new element names, asked the discoverers to suggest a name, and they proposed copernicium and the symbol Cp. IUPAC approved the name in 2010, but with the symbol Cn, since Cp had been used for lutetium when it was known as cassiopeium.

ΚΠ

2009 Daily Tel. 17 July 1/1 Copernicium, discovered 13 years ago and previously known as element 112, was officially added to the table only a few weeks ago.

2011 J. Emsley Nature's Building Blocks (new ed.) 144 By analogy with mercury, copernicium might even be slightly volatile.

2013 Huffington Post (Nexis) 29 Aug. The periodic table predicts that the element copernicium,..should behave like cadmium and mercury.

This is a new entry (OED Third Edition, June 2014; most recently modified version published online March 2022).

单词	copernicium
释义	coperniciumn. Brit. /ˌkəʊpəˈnɪsɪəm/, U.S. /ˌkoʊpərˈnɪsiəm/, /ˌkoʊpərˈnɪʃiəm/ Origin: From a proper name, combined with an English element. Etymons: proper name Copernicus , -ium suffix. Etymology: < the name of Nicolaus Copernicus (see Copernican adj.) + -ium suffix. Chemistry. A radioactive transuranic chemical element, atomic number 112, produced artificially. Symbol Cn.The element was first produced in 1996, and was provisionally known as element 112; IUPAC, the international body that approves new element names, asked the discoverers to suggest a name, and they proposed copernicium and the symbol Cp. IUPAC approved the name in 2010, but with the symbol Cn, since Cp had been used for lutetium when it was known as cassiopeium. ΚΠ 2009 Daily Tel. 17 July 1/1 Copernicium, discovered 13 years ago and previously known as element 112, was officially added to the table only a few weeks ago. 2011 J. Emsley Nature's Building Blocks (new ed.) 144 By analogy with mercury, copernicium might even be slightly volatile. 2013 Huffington Post (Nexis) 29 Aug. The periodic table predicts that the element copernicium,..should behave like cadmium and mercury. This is a new entry (OED Third Edition, June 2014; most recently modified version published online March 2022). < n.2009
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