| Acronym | Meaning |
| QSRR | Quantitative Structure-retention Relationships |
| DARPA | Defense Advanced Research Projects Agency (Department Of Defense) |
| SSSP | Simulation Of Single Sludge Processes |
| SOPHF | Spin And Orbital Polarized Hartree-Fock |
| USW | Ultrasonic Welding |
| AHW | Atomic Hydrogen Welding |
| DZDP | (double Zeta)-diffuse-polarization (basis Set In Configuration-mixing Mo Calcns. On Mols.) |
| DSITMS | Direct Sampling Ion Trap Mass Spectrometry |
| MAPK | Mitogen-activated Protein Kinase |
| IIR | Isobutylene Isoprene Rubber |