| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Aristotype | No definition provided | Christopher Rauch | 2023.12.01 |
| Arithmetic | No definition provided | Christopher Rauch | 2023.12.01 |
| Arithmetic--Bibl | No definition provided | Christopher Rauch | 2023.12.01 |
| Arithmetic, Commercial | No definition provided | Christopher Rauch | 2023.12.01 |
| Arithmetic, Mechanical | No definition provided | Christopher Rauch | 2023.12.01 |
| Arithmetic, Mental | No definition provided | Christopher Rauch | 2023.12.01 |
| Arizonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Arkansas (Confederate ironclad) | No definition provided | Christopher Rauch | 2023.12.01 |
| Arkelite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ark, Noah’s | No definition provided | Christopher Rauch | 2023.12.01 |
| AR_LengthUnit | Units for AR_AxisLength and AR_NeutralLength | Ryan McGranaghan | 2023.04.16 |
| Arm | No definition provided | Christopher Rauch | 2023.12.01 |
| Armada | No definition provided | Christopher Rauch | 2023.12.01 |
| Armada, 1588 | No definition provided | Christopher Rauch | 2023.12.01 |
| Armadillos | No definition provided | Christopher Rauch | 2023.12.01 |
| Armalcolite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Armaments | No definition provided | Christopher Rauch | 2023.12.01 |
| Armangite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Armatures | No definition provided | Christopher Rauch | 2023.12.01 |
| Armbrusterite | No definition provided | Ryan McGranaghan | 2023.04.16 |