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copernicium

[koh-per-nis-ee-uh m]
noun Chemistry, Physics.
  1. a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Cn; atomic number: 112.
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Origin of copernicium

named after Polish astronomer Nicolaus Copernicus; see -ium
Formerly unubium, element 112.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018