| Acronym | Meaning |
| ECM | Embedded Cluster Method (in Electronic-structure Calcns.) |
| EIP | Eigenvalue-independent Partitioning (in Coupled-cluster Calcns.) |
| IPHAS | The INT/WFC Photometric H-alpha Survey Of The Northern Galactic Plane |
| MISA | Municipal-Industrial Strategy For Abatement |
| RFL | Resorcinol-formaldehyde Latex [dip Coating] |
| NESHAPS | National Emission Standards For Hazardous Air Pollutants |
| MSK | Muscular-skeletal Effects |
| CRQL | Contract Required Quantitation Limit |
| FEM | Finite Element Method |
| ECR | Electron Cyclotron Resonance |