| Acronym | Meaning |
| HPCCP | High Performance Computing And Communications Program |
| ALAP | As Low As Practical |
| HSLA | High-strength Low-alloy (steel) |
| NASA | National Aeronautics And Space Administration |
| VLBA | Very Long Baseline Array |
| SAMO | Simulated Ab Initio Molecular Orbital |
| OPHF | Orbital-polarized Hartree-Fock |
| ACCP | Atlantic Climate Change Program (of NOAA |
| ACRIM | Active Cavity Radiometer Irradiance Monitor |
| SLAP | Standard Light Antarctic Precipitation |