| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Abbots | No definition provided | Christopher Rauch | 2023.12.01 |
| Abbreviations | No definition provided | Christopher Rauch | 2023.12.01 |
| Abbreviations, English | No definition provided | Christopher Rauch | 2023.12.01 |
| Abbreviations, French | No definition provided | Christopher Rauch | 2023.12.01 |
| Abbreviations, Hebrew | No definition provided | Christopher Rauch | 2023.12.01 |
| Abdomen | No definition provided | Christopher Rauch | 2023.12.01 |
| Abdomen--Diseases | No definition provided | Christopher Rauch | 2023.12.01 |
| Abdomen--Surgery | No definition provided | Christopher Rauch | 2023.12.01 |
| Abdomen--Tumors | No definition provided | Christopher Rauch | 2023.12.01 |
| Abduction | No definition provided | Christopher Rauch | 2023.12.01 |
| Abelian equations | No definition provided | Christopher Rauch | 2023.12.01 |
| Abelian functions | No definition provided | Christopher Rauch | 2023.12.01 |
| Abell clusters | Galaxy clusters listed in the Abell catalog, which is a catalog of 4073 rich galaxy clusters grouped by constellation and by catalog number. Published first in 1958, it contained the clusters visible from the northern hemisphere. A supplement for the southern hemisphere survey was published in 1988. | Ryan McGranaghan | 2023.04.16 |
| Abelsonite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Abenakiite (Ce) | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Aberdeen-Angus cattle | No definition provided | Christopher Rauch | 2023.12.01 |
| Abernathyite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Aberration | No definition provided | Christopher Rauch | 2023.12.01 |
| Aberration, Chromatic and spherical | No definition provided | Christopher Rauch | 2023.12.01 |
| Abhurite | No definition provided | Ryan McGranaghan | 2023.04.16 |