| Meaning | Category |
| Ability Opportunity And Intent | Community->Law |
| Absence Of Ink | Computing->General |
| Advance Ordering Information | Business->General |
| Africa Orientale Italiana | Regional->Countries Regional->African |
| Age Of Innocence | Academic & Science->Chemistry |
| All Other Income | Business->Accounting |
| Ancestry Online Image | Community |
| Ancona, Italy | Regional->Airport Codes |
| And Or Invert | Computing->Assembly |
| Angle Of Incidence | Academic & Science->Physics |
| Apple Orthodontix, Inc. | Business->AMEX Symbols |
| Area of Interest | Governmental->Military |
| Areas Of Interaction | Academic & Science->Physics |
| Associate Office Infrastructure | Miscellaneous->USPS |
| Automated Optical Inspection | Business->General |
| Automatic Optical Inspection | Academic & Science->Electronics Governmental->Military |
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