niacin

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noun ni·a·cin \ˈnī-ə-sən\

Definition of niacin

  1. :  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

Origin and Etymology of niacin

nicotinic acid + 1-in


First Known Use: 1942


NIACIN Defined for English Language Learners

niacin

play
noun ni·a·cin \ˈnī-ə-sən\

Definition of niacin for English Language Learners

  • : 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

play
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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