Uup
Symbol, Chemistry, Physics.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Uup
The symbol for element 115.
element 115
Uup
An artificially produced radioactive element whose most stable confirmed isotopes have mass numbers of 287 and 288 and half-lives of less than one second. Also called ununpentium See Periodic Table.
The American Heritage® Science Dictionary
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