| Acronym | Meaning |
| BFU-E | Burst-forming Unit-erythroid |
| FCC | Fluidized Catalytic Cracking |
| SFRI | Sludge Filtration Resistance Index |
| PPMA | Parts Per Million Atomic |
| AGCM | Adiabatic Generator Coordinate Method (for Energy Level Calcn.) |
| CAP | Consolidation By Atmospheric Pressure |
| 2PH TDA | Two-particle-hole Tamm-Dancoff Approximation (for Closed-shell |
| CIEIA | Competitive Inhibition Enzyme Immunoassay |
| QISM | Quantum Inverse Scattering Method |
| MMC | Molecular Mechanics For Clusters Model |