darmstadtium

[dahrm-stat-ee-uhm]
noun Chemistry, Physics.
a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Ds; atomic number: 110.
Formerly ununnilium, element 110.


Origin:
named after Darmstadt, the city in Germany where it was first created; see -ium

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Main Entry:  darmstadtium
Part of Speech:  n
Definition:  a synthetic chemical element, element 110 of the periodic chart (Ds) in the same group as nickel, palladium, and platinum
Etymology:  1984; formerly ununnilium or Eka-Platinum
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American Heritage
Science Dictionary
darmstadtium   (därm'shtät'ē-əm)  Pronunciation Key 
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 American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for darmstadtium
This activity is currently not thought to be due to a darmstadtium isotope.
See also island of stability external links darmstadtium.
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