ununoctium

Provisional systematic name formed by the Interdivisional Committee on Nomenclature and Symbols (CNIC, Commission on Nomenclature of Inorganic Chemistry in English) of the IUPAC: the element with atomic number 118, each of its digits is translated by its Latin equivalent, attached to the others and accompanied by the suffix -ium (used to designate a chemical element). 118 is therefore written using un- for each 1, and oct- for the 8: un-un-oct-ium '1-1-8-ium'.