B
— Noun
– English
~ aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
B
— Noun
– English
~ a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
b
— Noun
– English
~ (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
B
— Noun
– English
~ originally thought to be a single vitamin but now separated into several B vitamins
B
— Noun
– English
~ a logarithmic unit of sound intensity equal to 10 decibels
B
— Noun
– English
~ the blood group whose red cells carry the B antigen
B
— Noun
– English
~ the 2nd letter of the Roman alphabet
b-52
— Noun
– English
~ United States military aircraft; B- stands for bomber
B.C.
— Adverb
– English
~ before the Christian era; used following dates before the supposed year Christ was born; "in 200 BC"
B.C.E.
— Adverb
– English
~ of the period before the Common Era; preferred by some writers who are not Christians; "in 200 BCE"