| Acronym | Meaning |
| SAACGS | State Ambient Air Concentration Guidelines Or Standards |
| CEPM | Coupled Electron Pair Method |
| NMHC | Nonmethane Hydrocarbons |
| ETF | Exponential-type Function (an Ao) |
| FCM | Finite-cluster Model (for Calcns. On Electromigration) |
| TOLED | Transparent Organic Light-emitting Diode |
| CMS | Complete Model Space (in Many-body Calcns.) |
| PEBBLE | Probes Encapsulated By Biologically Localized Embedding |
| CAEC | Center For Analysis Of Environmental Change |
| PETN | Pentaerythritol Tetranitrate |