niobium
noun
ni·o·bi·um
nī-ˈō-bē-əm 
: a lustrous light gray ductile metallic element that resembles tantalum chemically and is used in alloys see Chemical Elements Table
Examples of niobium in a Sentence
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Generating intense magnetic fields Constructed from niobium-tin (Nb3Sn) and niobium-titanium (Nb-Ti), these alloys require liquid helium immersion to lose their electrical resistance.
—
Aman Tripathi, Interesting Engineering, 30 May 2026
New copper substitutes, like ultra-conductive aluminum, carbon nanotubes, and niobium phosphide, are promising but still in their infancy.
—Adam Charles Simon, The Conversation, 19 Mar. 2026
Greenland is home to 25 of 34 CRMs identified by the European Commission, including graphite, niobium, and titanium.
Q5.
—Ian Dexter Palmer, Forbes.com, 27 Jan. 2026
Still, experts believe Venezuela has deposits of some minerals, such as coltan — of which the metals tantalum and niobium are derived — and bauxite, which can contain aluminum and gallium.
—John Towfighi, CNN Money, 11 Jan. 2026
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Aman Tripathi, Interesting Engineering, 30 May 2026
New copper substitutes, like ultra-conductive aluminum, carbon nanotubes, and niobium phosphide, are promising but still in their infancy.
—Adam Charles Simon, The Conversation, 19 Mar. 2026
Greenland is home to 25 of 34 CRMs identified by the European Commission, including graphite, niobium, and titanium.
Q5.
—Ian Dexter Palmer, Forbes.com, 27 Jan. 2026
Still, experts believe Venezuela has deposits of some minerals, such as coltan — of which the metals tantalum and niobium are derived — and bauxite, which can contain aluminum and gallium.
—John Towfighi, CNN Money, 11 Jan. 2026
See All Example Sentences for niobium
Cite this Entry
“Niobium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/niobium. Accessed 8 Jun. 2026.
Copy CitationKids Definition
niobium
noun
ni·o·bi·um
nī-ˈō-bē-əm
: a shiny gray metallic element used in alloys see element
Medical Definition
niobium
noun
ni·o·bi·um
nī-ˈō-bē-əm
: a lustrous light gray ductile metallic element that resembles tantalum chemically and is used in alloys
—symbol Nb
called also columbium
see Chemical Elements TableLove words? Need even more definitions?
Merriam-Webster unabridged
