| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Archean | No definition provided | Ryan McGranaghan | 2023.04.16 |
| arched | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Archeomagnetism | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Archerite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Archers | No definition provided | Christopher Rauch | 2023.12.01 |
| Archery | No definition provided | Christopher Rauch | 2023.12.01 |
| Arches | No definition provided | Christopher Rauch | 2023.12.01 |
| Arches, Metal | No definition provided | Christopher Rauch | 2023.12.01 |
| Arches, Oblique | No definition provided | Christopher Rauch | 2023.12.01 |
| Arches, Triumphal | No definition provided | Christopher Rauch | 2023.12.01 |
| archetypal | No definition provided | Ryan McGranaghan | 2023.04.16 |
| arch filament system | A system of small, arched linear-absorption H-alpha features connecting bright, compact plage of opposite polarity. An AFS is a sign of emerging bipolar magnetic flux and possibly rapid or continued g rowth in an active region. | Ryan McGranaghan | 2023.04.16 |
| Archiannelida | No definition provided | Christopher Rauch | 2023.12.01 |
| Archicembalo | No definition provided | Christopher Rauch | 2023.12.01 |
| Architects, Belgian | No definition provided | Christopher Rauch | 2023.12.01 |
| Architects, British | No definition provided | Christopher Rauch | 2023.12.01 |
| Architects, Flemish | No definition provided | Christopher Rauch | 2023.12.01 |
| Architectural acoustics | No definition provided | Christopher Rauch | 2023.12.01 |
| Architectural casts | No definition provided | Christopher Rauch | 2023.12.01 |
| Architectural designs | No definition provided | Christopher Rauch | 2023.12.01 |