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nb
 
Noun nb has 2 senses
  1. niobium, Nb, atomic number 41 - a soft gray ductile metallic element used in alloys; occurs in niobite; formerly called columbium
    --1 is a kind of metallic element, metal
    --1 is a substance of niobite, columbite
    --1 has particulars: 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"
    --2 is a kind of note, annotation, notation
nazima nazimova nazionale nazioni nazis nazism nazr nazrana nb nba nbcu s nbd nbe nbjkg nbmbn nbmn nbq

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