Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym NAS is...

NAS is

National Airspace System
North American Series

More Meanings For NAS:

Network-Attached Storage
Network Access Server
Network Access Server
Network Access Server
Network Attached Storage
Network Access Services
Network Audio System
Network Audio Server
Network Authentication Service
Not Absolutely Sure
NTFS (New Technology File System) Analog System
Not Another School
Nice And Slow
National Airspace System
North American Series

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