b Urdu Meaning

1. n. aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil

2. n. the blood group whose red cells carry the B antigen

3. n. the 2nd letter of the Roman alphabet

4. n. (physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter

5. n. a logarithmic unit of sound intensity equal to 10 decibels

6. n. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder

7. n. originally thought to be a single vitamin but now separated into several B vitamins