| Acronym | Meaning |
| FGRM | Fourier-grid R-matrix Formalism (in Scattering Problems) |
| UHF-CO | Unrestricted Hartree-Fock Crystal Orbital |
| IRMS | Isotope Ratio Mass Spectrometry |
| SIMR | Swedish Institute For Metals Research |
| TSR | Thermal Shock Resistance |
| MIBK | Methyl Isobutyl Ketone |
| ISE | Iterative Secular Equation (method For Solving The Schroedinger Equation) |
| ERL-C | Environmental Research Laboratory Corvallis |
| APCA | Air Pollution Control Association |
| PVA | Polyvinyl Alcohol |