Definition of


  1. (noun, substance) a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract

via WordNet, Princeton University

Synonyms of Niacin

nicotinic acid

Alternate forms of Niacin

Hypernyms: b, b complex, b vitamin, b-complex vitamin, vitamin b, vitamin b complex

Origin of the word Niacin

  1. "pellagra-preventing vitamin in enriched bread," 1942, coined from ni(cotinic) ac(id) + -in, chemical suffix; suggested by the merican Medical Association as a more commercially viable name than nicotinic acid.
    "The new name was found to be necessary because some anti-tobacco groups warned against enriched bread because it would foster the cigare… more

via Online Etymology Dictionary, ©2001 Douglas Harper

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