aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
immediately below the A-horizon; contains deposits of organic matter leached from surface soils
the ordinary clarinet with a middle range
originally thought to be a single vitamin but now separated into several B vitamins
the 2nd letter of the Roman alphabet
the 2nd letter of the Roman alphabet
a logarithmic unit of sound intensity equal to 10 decibels
the blood group whose red cells carry the B antigen
(physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
