| Acronym/Abbreviation |
Meaning(s) Meanings Help ? |
| AAC |
- Advanced Audio Coding (consumer electronics, Media Players/consumer electronics, Car Electronics/consumer electronics, In-Dash Units - a file format)

- Army Air Corps (collectibles, Militaria/collectibles, Army)
- Aluminum, Aluminum and Chrome (toys, Radio Controlled/toys, Parts and Accessories - a type of metal)
- Alternate Address Confirmation (other, Payment and Shipping/other, PayPal)
|
| AC |
- Alternating Current (consumer electronics, Miscellaneous)

- Air Conditioning (motor vehicles, Features)
- Allis-Chalmers (business and industrial, Tractors - a manufacturer, see www.allischalmers.com)
- Atlantic City (collectibles, Casino)
- Artist Choice (collectibles, Disneyana)
- Acres (real estate - 43,560 square feet or 4,840 square yards)
- American Character (dolls)
- Answer Center (other, Site Specific/other, eBay - an area of the site where you can get answers from experienced eBay members - see pages.ebay.com/community/answercenter/index.html)
|
| AF |
- Auto Focus (cameras, Lenses/cameras, Canon/cameras, Nikon/cameras, Film Based Cameras/cameras, Flashes - Canon, Nikon)
- Abercrombie & Fitch (clothing, Brands - see also A&F)
- Air Force (collectibles, Militaria/collectibles, Air Force)
- American Flyer (toys, Trains/toys, Suppliers and Manufacturers)
- Action Figure(s) (toys, Action Figures/toys, Figures Miscellaneous)
- Authentic Fabrics (sports, Sports Cards/sports, General Card Types)
- Audio Frequency (consumer electronics, Radios)

- [About/Almost] Fine (other, General Grades)
|
| ALC |
- At Last Classics (clothing, Brands)
- Automatic Level Control (consumer electronics, Radios)

|
| AM |
- Actionmaster (toys, Action Figures/toys, Transformers)
- Action Man (toys, GI Joe/toys, Joe Figures)
- Autographed Manuscript (collectibles, Autographs/collectibles, Sports Autographs/collectibles, Entertainment Autographs/collectibles, Other Autographs - see also AMS)
- Adult Medium (clothing, Sizes)
- Adventure Module (video games, Miscellaneous)
- Amplitude Modulation (consumer electronics, Radios)

- All Mountain (sports, Cycling)
- Almost Mint (other, General Grades)
|
| APRS |
- Automatic [Position/Packet] Reporting System (consumer electronics, GPS/consumer electronics, Radios)
|
| AR |
- Silver (coins, Miscellaneous)
- Acoustic Research (consumer electronics, Home Audio - brand owned by Audiovox, see www.audiovox.com)

- Accelerated Reader (books, Childrens)
- [Airsoft/Automatic/Assualt] Rifle (sports, Airsoft/sports, Gun Models/sports, Hunting/sports, Gun Models)
- Arkansas (other, States/antiques, Maps)
- Action Replay (video games, Miscellaneous)
- Anti-Reflective (clothing, Sunglasses)
|
| ASF |
- Advanced Streaming Format (consumer electronics, Media Players)
|
| ATSC |
- Advanced Television Systems Committee (consumer electronics, Televisions/computers, Desktops and Laptops - US, Canada, Mexico, Taiwan, South Korea)
|
| ATU |
- Antenna Tunning Unit (consumer electronics, Radios)
|
| AU |
- [About/Almost] Uncirculated (coins, Grades/paper money - grades 50, 53, 55, 58)
- Australia (clothing, Sizes/consumer electronics, Gadgets/consumer electronics, Voltage Converters)

- Austria (clothing, Sizes/consumer electronics, Gadgets/consumer electronics, Voltage Converters)

- Autographed (sports, Sports Cards/sports, General Card Types)
- Australian (other, Miscellaneous - an Australian auction)
|
| AV |
- Audio/Visual (consumer electronics, Media Players/consumer electronics, A/V Accessories and Cables/video games, Miscellaneous/cameras, Miscellaneous/computers, Miscellaneous)

- Anti-Vibration (home and garden, Outdoor Power - Stihi ® chainsaws)
- Attack/Vertical (toys, Models and Kits/toys, Air - Harrier)
- Adrienne Vittadini (health and beauty, Fragrances)
|
| AVI |
- Audio Video Interleave (computers, Software/computers, Drives/consumer electronics, Media Players - a file type)
|
| AWG |
- American Wire Gauge (business and industrial, Industrial Electrical/business and industrial, Connectors Switches and Wires/consumer electronics, Car Electronics/consumer electronics, Installation Products/motor vehicles, Miscellaneous)
|
| BD |
- Button Down (clothing, Mens)
- Blue-ray Disc (consumer electronics, Home Theater/movies, Formats)

- Blues Driver (music, Instruments/music, Guitars/music, Parts and Accessories - Boss)
- Bullet Drop (sports, Hunting/sports, Scopes and Optics and Sites - scopes, type of compensator)
- Bed (real estate)
- Becton, Dickinson (health and beauty, Medical and Special Needs/health and beauty, Monitoring and Testing)
|