vitamin B: Meaning and Definition of

vitamin B1

1. thiamine.

vitamin B2

1. riboflavin.

vitamin B3

1. See

vitamin B6

1. pyridoxine.

vitamin B9

1. See

vitamin B12

1. a deep-red crystalline, water-soluble solid, CHNOPCo, obtained from liver, milk, eggs, fish, oysters, and clams: a deficiency causes pernicious anemia and disorders of the nervous system. Also called