| Term | Definition | Contributor | Modified |
|---|---|---|---|
| ball lightning | A rare and randomly occurring bright ball of light observed floating or moving through the atmosphere close to the ground. | Ryan McGranaghan | 2023.04.16 |
| Balloon ascensions | No definition provided | Christopher Rauch | 2023.12.01 |
| Balloon photography | No definition provided | Christopher Rauch | 2023.12.01 |
| Bal loons | No definition provided | Christopher Rauch | 2023.12.01 |
| Balloons | No definition provided | Christopher Rauch | 2023.12.01 |
| Balloons, Dirigible | No definition provided | Christopher Rauch | 2023.12.01 |
| Ballot | No definition provided | Christopher Rauch | 2023.12.01 |
| Ballot-box | No definition provided | Christopher Rauch | 2023.12.01 |
| Ball’s Bluff, Battle of, 1861 | No definition provided | Christopher Rauch | 2023.12.01 |
| Balls (Parties) | No definition provided | Christopher Rauch | 2023.12.01 |
| Balsam | No definition provided | Christopher Rauch | 2023.12.01 |
| Baltimore, Battle of, 1814 | No definition provided | Christopher Rauch | 2023.12.01 |
| Baltimore oriole | No definition provided | Christopher Rauch | 2023.12.01 |
| Balyakinite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Bambollaite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Bamboo | No definition provided | Christopher Rauch | 2023.12.01 |
| Bamfordite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Bams | No definition provided | Christopher Rauch | 2023.12.01 |
| Banality (Law) | No definition provided | Christopher Rauch | 2023.12.01 |
| Banality (Law) Dromaeidae | No definition provided | Christopher Rauch | 2023.12.01 |