| Acronym | Meaning |
| TID | Traveling Ionospheric Disturbance |
| QPLDA | Quasiparticle Local-density Approxn. |
| RCR | Replication-competent Retrovirus |
| POG | Post-orogenic Granitoids |
| HWRA | Hazardous Waste Reduction Act |
| ICC | Ignition Control Compound |
| OSCC | Oral Squamous Cell Carcinoma |
| SESMO | Semiempirical Scaled Molecular Orbital |
| MODESC | Magnetooptically Detected Spin Conversion Spectroscopy |
| PES | Photoelectron Spectroscopy |