niobium


ni·o·bi·um

noun \nī-ˈō-bē-əm\

Definition of NIOBIUM

: a lustrous light gray ductile metallic element that resembles tantalum chemically and is used in alloys—symbol Nb; called also columbium; see element table

Seen & Heard

What made you want to look up niobium? Please tell us where you read or heard it (including the quote, if possible).