| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Harmony | No definition provided | Christopher Rauch | 2023.12.01 |
| Harmony society | No definition provided | Christopher Rauch | 2023.12.01 |
| Harmotome | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Harness | No definition provided | Christopher Rauch | 2023.12.01 |
| Harness making and trade | No definition provided | Christopher Rauch | 2023.12.01 |
| Haro galaxies | A type of galaxies characterized by strong emission in the blue and violet regions of the spectrum. They are often elliptical or lenticular. | Ryan McGranaghan | 2023.04.16 |
| Harp | No definition provided | Christopher Rauch | 2023.12.01 |
| Harpsichord | No definition provided | Christopher Rauch | 2023.12.01 |
| Harpsichord music | No definition provided | Christopher Rauch | 2023.12.01 |
| Harrarjie language, | No definition provided | Christopher Rauch | 2023.12.01 |
| Harriman Alaska expedition, 1899 | No definition provided | Christopher Rauch | 2023.12.01 |
| Harrisburg insurrection, 1838 | No definition provided | Christopher Rauch | 2023.12.01 |
| Harrisonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Harry Knowlton (Schooner) | No definition provided | Christopher Rauch | 2023.12.01 |
| Harstigite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Hartford (Sloop) | No definition provided | Christopher Rauch | 2023.12.01 |
| Hartite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Harvesters | No definition provided | Christopher Rauch | 2023.12.01 |
| harvesting | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Harvesting | No definition provided | Christopher Rauch | 2023.12.01 |