| Acronym | Meaning |
| OOA | Oxygenated Organic Aerosol |
| EXEFS | Extended X-ray Emission Fine Structure |
| CGIAR | Consultative Group On International Agricultural Research |
| NEC | National Electrical Code |
| CEELS | Core Electron Energy Loss Spectroscopy |
| IAM | Integrated Assessment Modeling |
| LOCV | Lowest-order Constrained Variation |
| CBF | Core-binding Factor |
| UMP4SDTQ | Unrestricted Moeller-Plesset 4th-order (perturbation Theory With) Single |
| IAM | Immobilized Artificial Membrane |