noun Etymology: New Latin, from Latin Niobe; from its occurrence in tantalite Date: 1845 a lustrous light gray ductile metallic element that resembles tantalum chemically and is used in alloys
NIOBIUM
Meaning of NIOBIUM in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012