The definition of copernicium is the newest element on the periodic table of elements, a radioactive man-made element named after Copernicus with a symbol Cn and atomic number 112.
The element first created in 1996 in a lab in Germany is an example of Copernicium.
a radioactive chemical element with a very short half-life: a transactinide produced by bombarding lead with zinc ions: symbol, Cn; at. no. 112
Origin of coperniciumModL, after Copernicus + -ium
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.
Origin of coperniciumAfter Nicolaus Copernicus