Definitions

1. noun

A chemical element with the symbol Nb and atomic number 41, used in high-strength steel alloys, electronics, and medical implants.

“The new alloy contains a significant amount of niobium to improve its strength and durability.”

2. noun

A rare-earth element, also known as columbium, especially in historical or poetic contexts.

“The old poet used the term niobium to describe the mysterious, glowing rocks on the mountain.”