bæˈsɪl.əs

ˈbɔːˌɹɒn 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 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