Definition of niacin
: an acid C6H5NO2 of the vitamin B complex found widely in animals and plants and used especially against pellagra; also : nicotinamide —called also nicotinic acid
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Origin and Etymology of niacin
nicotinic acid + 1-in
First Known Use: 1942
NIACIN Defined for English Language Learners
niacin
playDefinition of niacin for English Language Learners
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: a type of natural substance (called a vitamin) that is found in certain foods and that helps your body to be healthy
Medical Dictionary
niacin
playMedical Definition of niacin
: 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
Learn More about niacin
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Nglish: Translation of niacin for Spanish speakers Britannica.com: Encyclopedia article about niacin
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