roentgenium
[ rent-gen-ee-uh m, -jen-, ruhnt- ]
/ rɛntˈgɛn i əm, -ˈdʒɛn-, rʌnt- /
noun Chemistry, Physics.
a superheavy, synthetic radioactive element with a very short half-life. Symbol: Rg; atomic number: 111.
Formerly
unununium,
element 111.
Words nearby roentgenium
roemer,
roentgen,
roentgen equivalent man,
roentgen ray,
roentgenism,
roentgenium,
roentgenize,
roentgeno-,
roentgenogram,
roentgenograph,
roentgenography