ununoctium

Systematic element name

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ununoctium (uncountable)

1. (dated) The systematic element name for the chemical element with atomic number 118 (symbol Uuo); now named oganesson.

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• oganesson

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ununoctium

1. oganesson

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ununoctium n (uncountable)

1. ununoctium

Derived from ūn(us) (“one”) + ūn(us) + oct(ō) (“eight”) +‎ -ium (chemical element suffix), in reference to the element's atomic number (118).

• (Classical) IPA^(key): /uː.nuːˈnok.ti.um/, [uːnuːˈnɔkt̪iʊ̃ˑ]
• (modern Italianate Ecclesiastical) IPA^(key): /u.nuˈnok.t͡si.um/, [unuˈnɔkt̪͡s̪ium]

ūnūnoctium n (genitive ūnūnoctiī); second declension

1. (New Latin) ununoctium

Second-declension noun (neuter).

• Italian: ununoctio

ununoctium n (genitive singular ununoctia, declension pattern of mesto)

1. ununoctium (element)