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    b - Dictionary definition and meaning for word b

    (noun) aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
    Synonyms : bacillus
    (noun) originally thought to be a single vitamin but now separated into several B vitamins Definition
    (noun) a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
    Synonyms : atomic number 5 , boron
    (noun) a logarithmic unit of sound intensity equal to 10 decibels
    Synonyms : bel
    (noun) (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
    Synonyms : barn
    (noun) the 2nd letter of the Roman alphabet Definition
    (noun) the blood group whose red cells carry the B antigen
    Synonyms : group b , type b
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