| Acronym | Meaning |
| HDD | Hard Disk Drive |
| TCDE | Two-center Dirac Equation |
| ERD | Emergency Response Division |
| CCR | Conradson Carbon Residue |
| SEHRRS | Surface Enhanced HyperRaman Resonance Spectroscopy |
| ACP | Automatic Correlation Partitioning |
| SIEC | Spherical Inertial Electrostatic Confinement |
| OMB | Office Of Management And Budget |
| ASTROS | Automated Structural Optimization System |
| DSIP | Delta-sleep Inducing Peptide |