| Acronym | Meaning |
| HEGO | Heated Exhaust Gas Oxygen |
| MOM | Modified Operator Method (for Energy-level Calcns.) |
| MELAS | Mitochondrial Myopathy |
| MQMAS | Multiple-quantum Magic-angle Spinning |
| NIBSC | National Institute For Biological Standards And Control |
| GEMMA | Gas-phase Electrophoretic Mobility Molecular Analysis |
| CSO | Combined Sewage Overflow(s) |
| TDO | Truncated Diatomic Orbital (a MO) |
| FOEA | First-order Eikonal Approximation |
| ACP | Acyl Carrier Protein |