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Definition of Nac
1. Noun. A council consisting of permanent representatives of all the member countries of NATO; has political authority and powers of decision.
Exact synonyms: North Atlantic Council
Group relationships: Nato, North Atlantic Treaty Organization
Generic synonyms: Council
Group relationships: Nato, North Atlantic Treaty Organization
Generic synonyms: Council
Medical Definition of Nac
1. A naturally occurring substance that is metabolised into the amino acid cysteine. Cysteine is one of the three components of the major cellular antioxidant glutathione (see), and people with HIV have decreased levels of this compound. Clinical studies of oral and intravenously administered NAC are evaluating its usefulness in decreasing HIV activity. See: Oxidative Stress. (09 Oct 1997)