1. A soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
   - niobium, atomic number 41

1. A Latin phrase (or its abbreviation) used to indicate that special attention should be paid to something
   "the margins of his book were generously supplied with pencilled NBs"
   - nota bene, N.B.

Type of: annotation, metal, metallic element, notation, note

Part of: columbite, niobite

Encyclopedia: NB

• Rubin test
• Rubinstein
• ruble
• rubor
• rubric
• rubrical
• rubricate
• Rubus
• Rubus australis
• Rubus caesius
• Rubus canadensis
• Rubus chamaemorus
• Rubus cissoides
• Rubus cuneifolius
• Rubus flagellaris
• Rubus fruticosus
• Rubus hispidus
• Rubus idaeus
• Rubus idaeus strigosus
• Rubus loganobaccus
• Rubus occidentalis
• Rubus odoratus
• Rubus parviflorus
• Rubus phoenicolasius
• Rubus saxatilis