| Acronym | Meaning |
| NLTE | Non-local Thermodynamic Equilibrium |
| MOTA | Materials Open Test Assembly |
| STIG | Steam-injected Gas Turbines |
| AACG | American Association For Crystal Growth |
| ACF | Activated Coke Fines |
| OECA | Office Of Enforcement And Compliance Assurance |
| AQCCT | Air Quality Criteria And Control Techniques |
| LCGTO | Linear Combination Of Gaussian Type Orbitals |
| AGID | Agar Gel Immunodiffusion |
| RD/RA | Remedial Design/Remedial Action |