Noun b has 7 senses
  1. B, type B, group B - the blood group whose red cells carry the B antigen
    --1 is a kind of blood group, blood type
  2. Bacillus, Bacilli, B - aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
    --2 is a kind of eubacteria, eubacterium, true bacteria
    --2 is a member of genus Bacillus
    --2 has particulars:
     Bacillus anthracis, anthrax; Bacillus subtilis, Bacillus globigii, grass bacillus, hay bacillus; Yersinia pestis
  3. B-complex vitamin, B complex, vitamin B complex, vitamin B, B vitamin, B - originally thought to be a single vitamin but now separated into several B vitamins
    --3 is a kind of water-soluble vitamin
    --3 has particulars:
     choline; inositol; pantothenic acid, pantothen; vitamin B1, thiamine, thiamin, aneurin, antiberiberi factor; vitamin B12, cobalamin, cyanocobalamin, antipernicious anemia factor; vitamin B2, vitamin G, riboflavin, lactoflavin, ovoflavin, hepatoflavin; vitamin B6, pyridoxine, pyridoxal, pyridoxamine, adermin; vitamin Bc, vitamin M, folate, folic acid, folacin, pteroylglutamic acid, pteroylmonoglutamic acid; niacin, nicotinic acid; biotin, vitamin H
  4. boron, B, atomic number 5 - a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
    --4 is a kind of chemical element, element
    --4 is a substance of kernite; borax
  5. bel, B - a logarithmic unit of sound intensity equal to 10 decibels
    --5 is a kind of sound unit
  6. barn, b - (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
    --6 is a kind of area unit, square measure
  7. B - the 2nd letter of the Roman alphabet
    --7 is a kind of
    letter, letter of the alphabet, alphabetic character
    --7 is a member of Roman alphabet, Latin alphabet
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