roentgenium

Noun
  1. A radioactive transuranic element (synset 114677003)
    is a type of: chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
    same as: atomic number 111, element 111, rg

Found on Word Lists

Other Searches