| Acronym | Meaning |
| SO SCF | Spin-optimized Self-consistent Field |
| UKAS | United Kingdom Accreditation Service |
| HMXB | High-mass X-ray Binaries |
| HAPS | Hazardous Air Pollutants |
| NTTAA | National Technology Transfer And Advancement Act |
| WCA | Water Conservation Area(s) |
| BCS-CRM | British Chemical Standard-Certified Reference Material |
| HPS | High Pressure Plasma Spraying |
| TWSM | Two-way Shape Memory |
| CGIAR | Consultative Group On International Agricultural Research |