| Abbreviation | Definition |
|---|---|
| ABSE | Agent Based Software Engineering |
| ABSE | Atom Based Software Engineering |
| ABSS | Asian Business Software Solutions |
| ABT | Advanced Brightness Technology |
| ABU | Analog Back- Up |
| ABUG | AdSonar Bulk Upload Gateway |
| A-BUG | AdSonar - Bulk Upload Gateway |
| AC | Acceptance Criteria |
| AC | Aerodynamic Code |
| AC | Apache Configurator |
| AC | Application Context |
| AC | Authenticast Comet |
| ACA | Arithmetical Comprehension Axiom |
| acad | AutoCAD |
| ACAS | Adaptive Context Aware Services |
| ACASA | Adult Clinic Assessment Software Application |
| ACAT | Aironet Configuration Administration Tool |
| ACATS | Ada Conformity Assessment Test Suite |
| ACATS | adult Coding Access Targets for Surgery |
| ACBA | Australian Coding Benchmark Audit |