unununium
[ uh-nuh-nuhn-ee-uh m ]
/ ə nəˈnʌn i əm /
noun Chemistry, Physics.
former name of roentgenium. Symbol: Uuu
Also called
element 111.
Words nearby unununium
ununoctium,
ununpentium,
ununquadium,
ununseptium,
ununtrium,
unununium,
unusable,
unused,
unusual,
unusuality,
unutterable
Definition for unununium (2 of 3)
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.
Definition for unununium (3 of 3)
Formerly
unununium.