[ uh-nuhn-tree-uh m ]
/ əˈnʌn tri əm /

noun Chemistry, Physics.

a superheavy, synthetic, radioactive element with a short half-life. Symbol: Uut; atomic number: 113.
Also called element 113.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for ununtrium

[ ə-nŭntrē-əm ]


See element 113.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.