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Medical Dictionary

niacin

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noun ni·a·cin \ˈnī-ə-sən\

Medical Definition of niacin

  1. :  a crystalline acid C6H5NO2 that is a member of the vitamin B complex occurring usually in the form of a complex of niacinamide in various animal and plant parts (as blood, liver, yeast, bran, and legumes) and is used especially to lower LDL and triglyceride levels in the blood and to treat pellagra—called also nicotinic acid





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a division or portion of a pool or whole

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