niacin

noun
ni·​a·​cin | \ ˈnī-ə-sən How to pronounce niacin (audio) \

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

Examples of niacin in a Sentence

Recent Examples on the Web The nutty spread also offers vitamins and minerals including the B vitamin niacin, iron, potassium and vitamin E. The healthiest peanut butter is made from just peanuts, while added salt, sugars and oils change its nutritional profile. Lisa Drayer, CNN, "Is peanut butter healthy?," 8 Mar. 2018 The nutty spread also offers vitamins and minerals including the B vitamin niacin, iron, potassium and vitamin E. The healthiest peanut butter is made from just peanuts, while added salt, sugars and oils change its nutritional profile. Lisa Drayer, CNN, "Is peanut butter healthy?," 8 Mar. 2018 The nutty spread also offers vitamins and minerals including the B vitamin niacin, iron, potassium and vitamin E. The healthiest peanut butter is made from just peanuts, while added salt, sugars and oils change its nutritional profile. Lisa Drayer, CNN, "Is peanut butter healthy?," 8 Mar. 2018 The nutty spread also offers vitamins and minerals including the B vitamin niacin, iron, potassium and vitamin E. The healthiest peanut butter is made from just peanuts, while added salt, sugars and oils change its nutritional profile. Lisa Drayer, CNN, "Is peanut butter healthy?," 8 Mar. 2018 The nutty spread also offers vitamins and minerals including the B vitamin niacin, iron, potassium and vitamin E. The healthiest peanut butter is made from just peanuts, while added salt, sugars and oils change its nutritional profile. Lisa Drayer, CNN, "Is peanut butter healthy?," 8 Mar. 2018 The nutty spread also offers vitamins and minerals including the B vitamin niacin, iron, potassium and vitamin E. The healthiest peanut butter is made from just peanuts, while added salt, sugars and oils change its nutritional profile. Lisa Drayer, CNN, "Is peanut butter healthy?," 8 Mar. 2018 The nutty spread also offers vitamins and minerals including the B vitamin niacin, iron, potassium and vitamin E. The healthiest peanut butter is made from just peanuts, while added salt, sugars and oils change its nutritional profile. Lisa Drayer, CNN, "Is peanut butter healthy?," 8 Mar. 2018 The nutty spread also offers vitamins and minerals including the B vitamin niacin, iron, potassium and vitamin E. The healthiest peanut butter is made from just peanuts, while added salt, sugars and oils change its nutritional profile. Lisa Drayer, CNN, "Is peanut butter healthy?," 8 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'niacin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of niacin

1942, in the meaning defined above

History and Etymology for niacin

nicotinic acid + -in entry 1

Keep scrolling for more

Learn More about niacin

Time Traveler for niacin

Time Traveler

The first known use of niacin was in 1942

See more words from the same year

Statistics for niacin

Cite this Entry

“Niacin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/niacin. Accessed 26 Feb. 2020.

Keep scrolling for more

More Definitions for niacin

niacin

noun
How to pronounce niacin (audio)

English Language Learners Definition of niacin

technical : a type of natural substance (called a vitamin) that is found in certain foods and that helps your body to be healthy

niacin

noun
ni·​a·​cin | \ ˈnī-ə-sən How to pronounce niacin (audio) \

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 used especially to lower LDL and triglyceride levels in the blood and to treat pellagra

called also nicotinic acid

More from Merriam-Webster on niacin

Nglish: Translation of niacin for Spanish Speakers

Britannica.com: Encyclopedia article about niacin

Comments on niacin

What made you want to look up niacin? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!