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Meaning of untriennium | Babel Free

Noun CEFR C1

Definitions

The systematic element name for the chemical element with atomic number 139 (symbol Ute).

uncountable

CEFR level

C1

Advanced
This word is part of the CEFR C1 vocabulary — advanced level.

See also

untrihexium Untrimmed untrimmedness untrinilium untriquadium untriseptium