| Acronym | Meaning |
| CIP | Configuration Interaction With Partner Orbitals |
| D.I. | Direct Injection [of Diesel Engines] |
| ASASP | Active Scattering Aerosol Spectrometer Probe |
| SPDT | Single Point Diamond Turning |
| ASPT | Av. Score Per Taxon |
| SD-MBPT | Single (and) Double (substituted States) Many-body Perturbation Theory |
| LMFBR | Liquid-Metal Fast Breeder Reactor |
| GOCO | Government-owned |
| BA | Best Atom (basis Set) |
| PP-MRD-CI | Pseudopotential-multireference Double Excitation-CI |