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Related to copernicium: flerovium, livermorium, Ununtrium


 (kō′pər-nē′sē-əm, -shē-)
n. Symbol Cn
An artificially produced radioactive element with atomic number 112 that has only been produced in trace amounts and has nine observed isotopes with mass numbers ranging from 277 to 285. The most stable isotope has a mass number of 285 and a half-life of about 34 seconds.

[After Nicolaus Copernicus.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Elements & Compounds) a highly radioactive element that is produced synthetically. Symbol: Cn; atomic no: 112; atomic wt: 285
[C21: named after Nicolaus Copernicus ]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Linked with Moscovium - (Discovered in a laboratory in Moscow); Copernicium - (Nicolaus Copernicus, Scientist); Roentgenium - (Wilhelm Rontgen); Meitnerium -(Lise Meitner); Lawrencium - (Ernest Lawrence); Nobelium - (Alfred Nobel), and Rutherfordium - Ernest Rutherford, New Zealand).
One of the weirdest elements is copernicium, technically a metal which forms as a gas at normal room temperature.
Three new elements were added to the Periodic Table in 2012 after the confirmation of elements 110, 111 and 112 were named darmstadtium (Ds), roentgenium (Rg) and copernicium (Cn).
His account of the Cold War politics behind the christening of the element "Copernicium," along with his discussion of "k" and its progenitor "OK" (perhaps the most successful American proto-meme), manage to boil down complex histories into tight, entertaining prose, and either one is worth the price of the book.
Element 112, found in 1996, was dubbed copernicium (Cn), for the famous Polish astronomer.
The elements are called darmstadtium (Ds), roentgenium (Rg) and copernicium (Cn).
Down at spot 112 on the periodic table, an element first produced in 1996 by German scientists now has a name: copernicium, for the 16th century astronomer Copernicus (SN: 3/27/10, p.
The element's proposed name is copernicium (Cp), after the 16th-century astronomer Nicolaus Copernicus.