unnilnilium

systematic provisional name formed by the Interdivisional Committee on Nomenclature and Symbols (CNIC, Commission on Nomenclature of Inorganic Chemistry in English) of the IUPAC: each digit of the atomic number is translated by its Greco-Latin equivalent, attached to the others and accompanied by the suffix -ium (used to designate a chemical element). Thus, 100 is written using un- for 1 and nil- (derived from nihil) for zero: un-nil-nil-ium '1-0-0-ium'.