- former name of darmstadtium. Symbol: Uun
Also called element 110.
- a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Ds; atomic number: 110.
Origin of darmstadtium
Formerly ununnilium, element 110.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- A synthetic radioactive element, first produced by bombarding lead atoms with nickel atoms. It has a mass number of 281, and its most stable isotope has a half-life of over one minute. Atomic number 110. See Periodic Table.
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