NAS

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NAS

Abbreviation for:
Normative Aging Study
Narcotics Assistance Section
National Acceptor Survey
National Asthma Survey
National Autistic Society 
new active substance 
no abnormality seen
nucleic acids
nucleoside analogues
nucleus accumbens septum
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

NAS

1. Neonatal abstinence syndrome. See Neonatal withdrawal syndrome.
2. No abnormalities seen.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

National Academy of Sciences

, National Academies,

NAS

An organization comprising a selected group of honored or distinguished engineers and scientists who are called upon to review and explore the uses of science and technology as they may further or enlighten national interests in the U.S.
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