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| B vitamin (plural B vitamins) |
noun |
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| Definition: |
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water-soluble vitamin: a water-soluble vitamin belonging to a group that is essential to the working of some enzymes. The B vitamins are B1 thiamine, B2 riboflavin, B6 pyridoxine, B12 cobalamin, B5 pantothenic acid, folic acid, and biotin.
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