follow Dictionary.com

Is irregardless a word?

element 115

noun, Chemistry, Physics.

ununpentium

[uhn-uh n-pen-tee-uh m] /ˌʌn ənˈpɛn ti əm/
noun, Chemistry, Physics.
1.
a superheavy, synthetic, radioactive element with a short half-life. Symbol: Uup; atomic number: 115.
Also called element 115.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Contemporary definitions for element 115
noun

an unconfirmed synthetic superheavy chemical element with atomic number 115

Word Origin

2004

Dictionary.com's 21st Century Lexicon
Copyright © 2003-2014 Dictionary.com, LLC
Cite This Source
element 115 in Science
element 115  
Symbol Uup
An artificially produced radioactive element whose isotopes have mass numbers of 287 and 288 and half-lives of less than one second. Atomic number 115. Also called ununpentium. See Periodic Table.
ununpentium
  (ə-nŭn'pěn'tē-əm)   
See element 115.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Word Value for element

9
12
Scrabble Words With Friends