'NB' definitions:
Definition of 'Nb'
(from WordNet)
noun
A soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium [syn: niobium, Nb, atomic number 41]
noun
Acronyms for 'nb'
From: V.E.R.A.
- Nota bene (slang, Usenet, IRC)