First Known Use: 1942
Dictionary
niacin
noun ni·a·cin \ˈnī-ə-sən\
: a type of natural substance (called a vitamin) that is found in certain foods and that helps your body to be healthy
Full 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 of NIACIN
nicotinic acid + 1-in
Medical Dictionary
niacin
noun ni·a·cin \ˈnī-ə-sən\
Medical 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 effective in preventing and treating human pellagra and blacktongue of dogs—called also nicotinic acid
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