ni·o·bi·um 
(nī-ōbē-əm)
(nī-ōbē-əm)n. Symbol Nb
A silvery, soft, rare, ductile metallic element that occurs chiefly in columbite-tantalite and is used in steel alloys, arc welding, and superconductive materials. Atomic number 41; atomic weight 92.906; melting point 2,477°C; boiling point 4,744°C; specific gravity 8.57; valence 2, 3, 5. See Periodic Table.
[After NIOBE (so called because it is extracted from tantalite).]
- Indo-European root: bherəg-
- Indo-European root: bhes-
- Indo-European root: bheudh-
- Indo-European root: bheug-
- Indo-European root: bheuə-
- Indo-European root: bhleu-
- Indo-European root: bhlē-
- Indo-European root: bhoso-
- Indo-European root: bhreg-
- Indo-European root: bhreu-
- Indo-European root: bhrāter-
- Indo-European root: bhrū-
- Indo-European root: bhā-
- Indo-European root: bhā-
- Indo-European root: bhāghu-
- Indo-European root: bhāgo-
- Indo-European root: dail-
- Indo-European root: daiwer-
- Indo-European root: dakru-
- Indo-European root: de-
- Indo-European root: deik-
- Indo-European root: dek-
- Indo-European root: dekm̥
- Indo-European root: deks-
- Indo-European root: del-