What does nana stand for?

N-Acetylneuraminic Acid (AD)

N-Acetylneuraminic Acid - Also, AcNeu, NAN - Biochemistry

National Advertising News Association (AD)

National Advertising Newspaper Association - Later, SNA (EA)

National Association of Nail Artists - Later, NANAA (EA)

Newsagents' Association of New South Wales and the Australian Capital Territory,Inc.

North American Newspaper Alliance

North American Normande Association (EA)

Northwest Alaska Native Association - Later, MA