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element 113

noun, Chemistry, Physics.
1.

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. 2015.
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Contemporary definitions for element 113
noun

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

Word Origin

2004

Dictionary.com's 21st Century Lexicon
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element 113 in Science
element 113  
Symbol Uut
An artificially produced radioactive element whose isotopes have mass numbers of 283 and 284 and half-lives of slightly more than one second. Atomic number 113. Also called ununtrium. See Periodic Table.
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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