(ˌjuːnɪlˈpɛntɪəm) n (Chemistry) chem a name proposed by the IUPAC for the element dubnium
un•nil•pen•ti•um
(ˌyu nɪlˈpɛn ti əm)
n. provisional name for the transuranic element with atomic number 105. Symbol: Unp Also called hahnium.[1975–80; < Latin ūn(us) one + nīl nothing + Greek pént(e) five + New Latin -ium -ium2]TranslationsEncyclopediaSeedubniumAcronymsSeeUNP