| Acronym | Meaning |
| PSSR | Perturbed Stationary State With Relativistic Effects |
| CMB | Cosmic Microwave Background |
| EPOCA | Environmental Project On Central America |
| MSEP | Mean Square Error Of Prediction |
| CIH | Certified Industrial Hygienist |
| PICA | Polymerization-induced Colloid Aggregation |
| VASE | Variable Angle Spectroscopic Ellipsometry |
| OPTS | Office Of Pesticides And Toxic Substances (USEPA) |
| LISPS | Laser-induced Shock Wave Plasma Spectroscopy |
| COS | Corona Oxide Semiconductor |