| Acronym | Meaning |
| CTA | Cellulose Triacetate (Reg: 9012093) |
| SMT | Standards |
| NADB | National Air Data Branch (US EPA) |
| CART | Cocaine And Amphetamine Regulated Transcript |
| TSDF | Treatment, Storage, And Disposal Facility |
| PEN | Polyethylene Naphthalate |
| TLM | Transmission Line Method |
| FQO | Forced Quantum Oscillator Method |
| TACI | Transmembrane Activator And CAML Interactor |
| ECR | Electron Cyclotron Resonance |