| Acronym | Meaning |
| CCAA | Canadian Clean Air Act |
| PCA | Polar Cap Absorption |
| ISCA | Ionization Spectroscopy For Chemical Analysis |
| ASA | Alternancy Symmetry Adapted (method For Spin-independent Hamiltonians For Alternant Hydrocarbons) |
| PLED | Polymer Light Emitting Diode |
| MBE | Molecular Beam Epitaxy |
| PKR | Protein Kinase R |
| PT | Perturbation Theory |
| LCMVAO | Linear Combination Of Modified Valence Atomic Orbital |
| MSP | Manganese Stabilizing Protein |