noun
- Aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil.
- synonyms: bacillus
- Originally thought to be a single vitamin but now separated into several B vitamins.
- synonyms: B-complex vitamin, B complex, vitamin B complex, vitamin B, B vitamin
- A trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder.
- synonyms: boron, atomic number 5
- A logarithmic unit of sound intensity equal to 10 decibels.
- synonyms: Bel
- Physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter.
- synonyms: barn
- The 2nd letter of the Roman alphabet.
- The blood group whose red cells carry the B antigen.
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). b. Retrieved September 20, 2026, from http://smartdefine.org/b/definitions/1212805 |
| Chicago | WordNet. 2010. "b" http://smartdefine.org/b/definitions/1212805 (accessed September 20, 2026). |
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| MLA | WordNet. "b" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/b/definitions/1212805> |