| Acronym | Meaning |
| UMP4SDTQ | Unrestricted Moeller-Plesset 4th-order (perturbation Theory With) Single |
| BNFL | British Nuclear Fuels Laboratory |
| GABA | Gamma-aminobutyric Acid |
| SHIV | Simian-human Immunodeficiency Virus |
| BLC | BACT/LAER Clearinghouse |
| APSIS | Athenian Photochem. Smog Intercomparison Of Simulations |
| TNRCC | Texas Natural Resource Conservation Commission |
| PBII | Plasma-based Ion Implantation |
| PEFR | Peak Expiratory Flow Rate (lung Function) |
| GRASP | Gradient Accelerated Spectroscopy |