B

noun

1.
aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
bacillus
2.
originally thought to be a single vitamin but now separated into several B vitamins
B complex B-complex vitamin B vitamin vitamin B vitamin B complex
3.
a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
atomic number 5 boron
4.
a logarithmic unit of sound intensity equal to 10 decibels
Bel
5.
the 2nd letter of the Roman alphabet
buky b
6.
the blood group whose red cells carry the B antigen
group B type B