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ununtrium

[uh-nuhn-tree-uh m] /əˈnʌn tri əm/
noun, Chemistry, Physics.
1.
a superheavy, synthetic, radioactive element with a short half-life. Symbol: Uut; atomic number: 113.
Also called element 113.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Contemporary definitions for ununtrium
noun

an unconfirmed synthetic chemical element with atomic number 113; also called eka-thallium

Word Origin

2004

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ununtrium in Science
ununtrium
  (ə-nŭn'trē-əm)   
See element 113.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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