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N.I.

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• NIA

  1. National Intelligence Authority. 2. Newspaper Institute of America. National Institute on Aging

• Niaaa

  National Institute on Alcohol Abuse and Alcoholism

• Niacin

  [nahy-uh-sin] /ˈnaɪ ə sɪn/ noun, Biochemistry. 1. . /ˈnaɪəsɪn/ noun 1. another name for nicotinic acid n. “pellagra-preventing vitamin in enriched bread,” 1942, coined from ni(cotinic) ac(id) + -in (2), chemical suffix; suggested by the American Medical Association as a more commercially viable name than nicotinic acid. The new name was found to be necessary […]

• Niacinamide

  [nahy-uh-sin-uh-mahyd] /ˌnaɪ əˈsɪn əˌmaɪd/ noun, Biochemistry. 1. . niacinamide ni·a·cin·a·mide (nī’ə-sĭn’ə-mīd’) n. See nicotinamide.

• Niad

  National Institute of Art and Disabilities

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