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Showing results for copernicium. Search instead for copernicia.

copernicium

American  
[koh-per-nis-ee-uhm] / ˌkoʊ pərˈnɪs i əm /

noun

Chemistry, Physics.

  1. a superheavy, synthetic, radioactive element with a very short half-life. Cn; 112.

copernicium Scientific  
/ kō′pər-nē′sē-əm /

  1. Symbol Cn A synthetic radioactive element that has only been produced in trace amounts. The most stable isotope has a mass number of 285 and a half-life of about 34 seconds. Atomic number 112.

  2. See Periodic Table

Etymology

Origin of copernicium

First recorded in 1005–10; named after Polish astronomer Nicolaus Copernicus.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Group 12 contains the four elements zinc, cadmium, mercury, and copernicium.

From Textbooks • Feb. 14, 2019

The radioactive elements copernicium, flerovium, polonium, and livermorium are also metals but are beyond the scope of this chapter.

From Textbooks • Feb. 14, 2019

There are a few of those this time around: copernicium among them.

From Seattle Times • Aug. 13, 2012

Element 112 was named copernicium in honor of astronomer Nicolaus Copernicus.

From New York Times • Jun. 8, 2011

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.