b | ||
1. | [ noun ] (immunology) the blood group whose red cells carry the B antigen | |
Synonyms: | group_B type_B | |
Related terms: | blood_group | |
2. | [ noun ] (biology) aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil | |
Synonyms: | bacilli bacillus | |
Related terms: | eubacteria bacillus_globigii anthrax yersinia_pestis genus_Bacillus | |
3. | [ noun ] (chemistry) a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder | |
Synonyms: | atomic_number_5 boron | |
Related terms: | chemical_element kernite borax | |
4. | [ noun ] originally thought to be a single vitamin but now separated into several B vitamins | |
Synonyms: | B_vitamin B_complex vitamin_B vitamin_B_complex B-complex_vitamin | |
Related terms: | water-soluble_vitamin vitamin_B1 vitamin_B2 vitamin_B6 niacin inositol vitamin_B12 vitamin_Bc pantothenic_acid biotin choline | |
5. | [ noun ] the 2nd letter of the Roman alphabet | |
Related terms: | letter Roman_alphabet | |
6. | [ noun ] (atomic or nuclear 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 | |
Related terms: | area_unit nuclear_physics | |
7. | [ noun ] (physics,acoustics) a logarithmic unit of sound intensity equal to 10 decibels | |
Synonyms: | bel | |
Related terms: | sound_unit | |
Similar spelling: |
Bo be Bi Ba BW by Bui Bua boy bow Bou boo Boe boa baa bey bee Bea Bay Bao Bai bah Bae buy Bye |