Definitions for



Overview of noun nb

The noun nb has 2 senses? (no senses from tagged texts)
1. niobium, Nb, atomic number 41

(a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium)

2. nota bene, NB, N.B.

(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")

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