| Abatis | |
| Abbey | |
| Abbreviation | |
| Abdicating | |
| Abdomen | |
| AbdominalAorta | |
| AbdominalCavity | |
| AbdominalExerciseDevice | |
| AbducensNerve | |
| AbductiveInferenceProcess | |
| Ablation | |
| Abolitionism | |
| AbominableSnowman | |
| Abortion-Intentional | |
| Absinthe | |
| AbsolutePathname | |
| AbsorptionEvent | |
| Abstinence | |
| AbyssalZone | |
| Abyssinian-Cat | |
| Acacia | |
| AcademicBookReport | |
| AcademicComposition | |
| AcademicDepartment | |
| AcademicEssay | |
| AcademicGown | |
| AcademicOrganization | |
| AcademicProfessional | |
| AcademicQuarter | |
| AcademicSemester | |
| AcademicTerm | |
| AcademicTest | |
| AcademicTesting | |
| AcademicTrimester | |
| AcademicYear | |
| AccelerationClause | |
| Accepting-CommunicationAct | |
| AccessingAComputerAccount | |
| AccessingAFile | |
| AccessingAFile-ReadOnly | |
| AccessNumber | |
| AccessoryNerve | |
| Accident | |
| Accommodating-HelpingAnAgent | |
| Accordion | |
| Account | |
| AccountActive | |
| Accountant | |
| AccountingClerk | |
| AccountingDepartment | |
| CycL |