Copernicium Definition
kōpər-nēsē-əm, -shē-
noun
A radioactive chemical element with a very short half-life: a transactinide produced by bombarding lead with zinc ions: symbol, Cn; at. no. 112
Webster's New World
Origin of Copernicium
After Nicolaus Copernicus
From American Heritage Dictionary of the English Language, 5th Edition
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