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We found 38 dictionaries with English definitions that include the word niacin:
Click on the first link on a line below to go directly to a page where "niacin" is defined.

General dictionaries General (22 matching dictionaries)
  1. niacin: Oxford Dictionaries [home, info]
  2. niacin: American Heritage Dictionary of the English Language [home, info]
  3. niacin: Collins English Dictionary [home, info]
  4. niacin: Vocabulary.com [home, info]
  5. niacin: Macmillan Dictionary [home, info]
  6. niacin: Merriam-Webster's Online Dictionary, 11th Edition [home, info]
  7. niacin: Cambridge Advanced Learner's Dictionary [home, info]
  8. Niacin: Wiktionary [home, info]
  9. niacin: Webster's New World College Dictionary, 4th Ed. [home, info]
  10. niacin: The Wordsmyth English Dictionary-Thesaurus [home, info]
  11. niacin: Dictionary.com [home, info]
  12. niacin: Online Etymology Dictionary [home, info]
  13. niacin: UltraLingua English Dictionary [home, info]
  14. Niacin (band), Niacin: Wikipedia, the Free Encyclopedia [home, info]
  15. niacin: Rhymezone [home, info]
  16. niacin: Free Dictionary [home, info]
  17. niacin: Mnemonic Dictionary [home, info]
  18. niacin: WordNet 1.7 Vocabulary Helper [home, info]
  19. niacin: LookWAYup Translating Dictionary/Thesaurus [home, info]
  20. niacin: Dictionary/thesaurus [home, info]

Art dictionaries Art (1 matching dictionary)
  1. Niacin: Health & Beauty Glossary [home, info]

Computing dictionaries Computing (1 matching dictionary)
  1. niacin: Encyclopedia [home, info]

Medicine dictionaries Medicine (12 matching dictionaries)
  1. Niacin: MedTerms.com Medical Dictionary [home, info]
  2. Niacin: Medical Dictionary [home, info]
  3. niacin: Johnson Bwby [home, info]
  4. Niacin (nicotinic acid): Merck Manuals [home, info]
  5. niacin: online medical dictionary [home, info]
  6. Niacin: Hepatitis C Information Central [home, info]
  7. Niacin: MEDLINE plus Illustrated Medical Encyclopedia [home, info]
  8. niacin: Dictionary of Cancer Terms [home, info]
  9. niacin: Medical dictionary [home, info]
  10. Niacin: University of Maryland Glossary of Medical Terms [home, info]
  11. niacin: Vitamin Glossary [home, info]
  12. Niacin: Drug Medical Dictionary [home, info]

Sports dictionaries Sports (1 matching dictionary)
  1. Niacin, Niacin, Niacin: Body Building [home, info]

Tech dictionaries Tech (1 matching dictionary)
  1. Niacin: Beauty & Health Glossary [home, info]

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (niacin)

noun:  a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract

Word origin

Words similar to niacin

Popular adjectives describing niacin

Phrases that include niacin:   niacin for high cholesterol, iron & niacin, slo niacin

Words similar to niacin:   nicotinic acid, more...

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