Cite
 

Meaning of unnilpentium

un•nil•pen•ti•um

Pronunciation: (y"nil-pen'tē-um), [key]
— n.
  1. provisional name for the transuranic element with atomic number 105. Symbol: Unp&hasp; Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.