What does AN stand for?

What does AN mean?

AN	Abl Negative Miscellaneous » Unclassified
AN	Absolutely Nowwhere Miscellaneous » Unclassified
AN	Access Node Computing » Telecom
AN	Account Number Business » Accounting
AN	Acid Number Miscellaneous » Unclassified
AN	Acquired Nystagmus Miscellaneous » Unclassified
AN	Acrylonitrile Miscellaneous » Plastics
AN	Added Neutrons Miscellaneous » Unclassified
AN	Adequate Nutrition Miscellaneous » Unclassified
AN	Adult Nationals Governmental » US Government
AN	Advanced Negative Miscellaneous » Unclassified
AN	Agricultural Nutrient Miscellaneous » Farming
AN	Aircraft National Miscellaneous » Unclassified
AN	Alianza Nacional International » Guatemalan
AN	All Natural Miscellaneous » Unclassified
AN	Almost Nil Miscellaneous » Unclassified
AN	Alphanumeric Governmental » Military
AN	American Names Miscellaneous » Unclassified
AN	Ammonium Nitrate Academic & Science » Chemistry
AN	Analog Governmental » NASA
AN	Analog Nonsecure Governmental » Military
AN	Anchorage Field Office Governmental » FBI Files
AN	Ancona (Provence) International » Italian
AN	Anime Nation Miscellaneous » Unclassified
AN	Anime North Miscellaneous » Unclassified