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ngwee
NH
NHI
NHL
NHS
NI
Ni
ni
niacin
niacinamide
Niagara
Niagara Falls
Niamey
nib
nibble
Nibelung
niblick
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niacin
ni·a·cin [ n əssin ]


noun 
Definition:
 
form of vitamin B: a B complex vitamin found in meat and dairy products. Deficiency of niacin causes pellagra. C6H5NO2
[Mid-20th century. <nicotine + acid]
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