Test Your Vocabulary

Take Our 10-Question Quiz

Name That Thing

Take our visual vocab quiz

Test Your Knowledge »

True or False?

A quick quiz about stuff worth knowing

Take It Now »

Join Us on FB & Twitter

Get the Word of the Day and More

Facebook | Twitter
  1. Word Games
  2. Word of the Day
  3. New Words & Slang
  4. Video
 

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

Learn More About NIOBIUM