transcription, транскрипция: [ naɪˈəubɪəm ]
n. Chem. a rare grey-blue metallic transition element occurring naturally in several minerals and used in alloys for superconductors. °Symb.: Nb. Also called COLUMBIUM. øøniobic adj. niobous adj. [Niobe daughter of Tantalus: so called because first found in TANTALITE]