| Acronym | Meaning |
| HTU | Height Of Transfer Unit (in Packed Tower Aeration System) |
| PDP | Plasma Display Panel |
| PCMI | Pellet Cladding Mechanical Interaction |
| HAO | Hybrid Atomic Orbital |
| CIV | Critical Ionization Velocity (ionosphere) |
| IEG | Immediate Early Gene |
| EMBR | Electromagnetic Brakepar |
| PAM | Peptidylglycine Alpha-amidating Monooxygenase |
| PAMBE | Plasma-assisted Molecular Beam Epitaxy |
| ALRSS | Advanced Land Remote Sensing System |