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Dictionary

Na'tional Acad'emy of Sci'ences

a private organization, created by an act of Congress (1863), that furthers science and advises the U.S. government on scientific and technical issues. Abbr.: N.A.S., NAS

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

national

National Aeronautics and Space Administration

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