| Acronym | Meaning |
| SUP-CI | Superdirect CI |
| CCM | Complex Coordinate Method (in Calcns. On Quantum Tunneling) |
| CCMST | Co-ordinating Committee On Marine Science And Technology (UK) |
| PBA | Poly(butyl Acrylate) |
| EFIG | Emission Factor Inventory Grouppar |
| MTTP | Maximum Total Trihalomethane Potential |
| ACTI | Advanced Computational Technology Initiative |
| CASARM | Chemical Agent Standard Analytical Reference Material |
| IOSVR | Infinite Order Sudden Vib-rotor Approximation |
| PVM | Photovoltaic Power Module |