unniltrium

provisional systematic name formed by the Interdivisional Committee on Nomenclature and Symbols (CNIC, Commission on Nomenclature of Inorganic Chemistry in English) of 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). 103 is therefore written using un- for 1, nil- (derived from nihil) for zero, and tri- for 3: un-nil-tr(i)-ium «1-0-3-ium».