| Acronym | Meaning |
| OTDR | Optical Time Domain Reflectometry |
| ATCC | American Type Culture Collection |
| ADW | Asymptotic Distorted Wave |
| GCS | Geo-Common Subsystem (subsystem Of AIRS) |
| HIIS | Heavy Ions In Space |
| DHFR | Dihydrofolate Reductase |
| APEG | Alkaline Polyethylene Glycolate |
| NAA | Nonattainment Area |
| APPH | Auger Peak To Peak Height |
| ISCA | Ionization Spectroscopy For Chemical Analysis |