| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Armstrongite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| AR_MtWilsonCls | Active Region Mt Wilson class | Ryan McGranaghan | 2023.04.16 |
| Army | No definition provided | Christopher Rauch | 2023.12.01 |
| Army appropriation bills | No definition provided | Christopher Rauch | 2023.12.01 |
| Army life | No definition provided | Christopher Rauch | 2023.12.01 |
| Army posts | No definition provided | Christopher Rauch | 2023.12.01 |
| Army--Supplies and stores--Remount service | No definition provided | Christopher Rauch | 2023.12.01 |
| Army--Supplies and stores--Staffs | No definition provided | Christopher Rauch | 2023.12.01 |
| Army--Supplies and stores--Supplies | No definition provided | Christopher Rauch | 2023.12.01 |
| Army--Transport service | No definition provided | Christopher Rauch | 2023.12.01 |
| Army wagons | No definition provided | Christopher Rauch | 2023.12.01 |
| Army-worms | No definition provided | Christopher Rauch | 2023.12.01 |
| AR_NeutralLength | The total length of polarity separation line segments within the AR | Ryan McGranaghan | 2023.04.16 |
| Arnhemite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Arnie acids | No definition provided | Christopher Rauch | 2023.12.01 |
| AR_NOAAclass | Active Regon NOAA class | Ryan McGranaghan | 2023.04.16 |
| AR_NOAANum | NOAA designated Active Region Number (e.g. 10930) | Ryan McGranaghan | 2023.04.16 |
| Arno (Schooner) | No definition provided | Christopher Rauch | 2023.12.01 |
| AR_NumSpots | Number of spots in Active region | Ryan McGranaghan | 2023.04.16 |
| Arnusia | No definition provided | Christopher Rauch | 2023.12.01 |