Meaning of unbiunium | Babel Free
Definitions
The systematic element name for the (as yet undiscovered) chemical element with atomic number 121 (symbol Ubu).
uncountable
Equivalents
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.