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element 110

noun, Chemistry, Physics.
Formerly ununnilium.


[dahrm-stat-ee-uh m] /dɑrmˈstæt i əm/
noun, Chemistry, Physics.
a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Ds; atomic number: 110.
Formerly ununnilium, element 110.
Origin of darmstadtium
named after Darmstadt, the city in Germany where it was first created; see -ium


[uhn-uh-nil-ee-uh m] /ˌʌn əˈnɪl i əm/
noun, Chemistry, Physics.
former name of darmstadtium. Symbol: Uun.
Also called element 110. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Contemporary definitions for element-110

a synthetic chemical element, element 110 of the periodic chart (Ds) in the same group as nickel, palladium, and platinum

Word Origin

1984; formerly ununnilium or Eka-Platinum's 21st Century Lexicon
Copyright © 2003-2014, LLC
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element-110 in Science
Symbol Ds
A synthetic radioactive element, first produced by bombarding lead atoms with nickel atoms. The isotope first synthesized has a mass number of 269 and a half-life of 0.18 milliseconds. Atomic number 110. See Periodic Table.
The temporary name given to chemical element 110. This element has now been officially named darmstadtium. The symbol for ununnilium was Uun.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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