| Term | Definition | Contributor | Modified |
|---|---|---|---|
| ancient | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ancient art | No definition provided | Christopher Rauch | 2023.12.01 |
| Ancient geography | No definition provided | Christopher Rauch | 2023.12.01 |
| Ancient history | No definition provided | Christopher Rauch | 2023.12.01 |
| Ancient lights | No definition provided | Christopher Rauch | 2023.12.01 |
| Ancillary | A complementary item which can besubordinate, subsidiary, auxiliary, supplementary to the primary item. | Ryan McGranaghan | 2023.04.16 |
| Ancylite (Ce) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ancylite (La) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Andalusite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Andaman language | No definition provided | Christopher Rauch | 2023.12.01 |
| Andersonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Andesine | No definition provided | Ryan McGranaghan | 2023.04.16 |
| andesite | Volcanic rock (or lava) characteristically medium dark in color and containing 54 to 62 percent silica and moderate amounts of iron and magnesium. | Ryan McGranaghan | 2023.04.16 |
| andisol | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Andorite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Andradite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Andreasbergolite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Andremeyerite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Andreolite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Andrewsite | No definition provided | Ryan McGranaghan | 2023.04.16 |