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Definitions for B

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  • Aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil

  • The blood group whose red cells carry the B antigen

  • The 2nd letter of the Roman alphabet

  • (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter

  • A logarithmic unit of sound intensity equal to 10 decibels

  • A trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder

  • Originally thought to be a single vitamin but now separated into several B vitamins

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