| Acronym | Meaning |
| PSCI | Partitioned (orbital Hessian) Super-configuration Interaction |
| CCFL | Cold Cathode Fluorescent Lamp |
| LIGO | Laser-interferometer Gravitational-wave Observatory |
| EDQNM | Eddy-damped Quasinormal Markovian [mathematics In Engineering] |
| HRE | Hormone-responsive Element |
| TPO | Temperature-programmed Oxidiation |
| AQMD | Air Quality Management District |
| APS | Appearance Potential Spectroscopy |
| MIC | Methyl Isocyanate |
| CFCC | Continuous Fiber Ceramic Composite |