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

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