Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun nb

2 senses of nb

Sense 1
niobium, Nb, atomic number 41 -- (a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium)
       => metallic element, metal -- (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)

Sense 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")
       => note, annotation, notation -- (a comment or instruction (usually added); "his notes were appended at the end of the article"; "he added a short notation to the address on the envelope")