| Acronym | Meaning |
| AMSR | Advanced Microwave Scanning Radiometer |
| PROACT | Proactive Respirometric Operational And Control Technology |
| PT2D | Second-order Perturbation Theory (with) Diagonal (part Of Fock Matrix) |
| VLSIPS | Very Large Scale Immobilized Polymer Synthesis |
| HESSI | High Energy Solar Spectroscopic Imager |
| TUNEL | Terminal Deoxynucleotidyl Transferase-mediated DUTP Nick End-labeling |
| LRS | Laser Resonant Shadowgraphy |
| AEGIS | ATM European Group For Improvement Of Scenarios |
| RRM | Rayleigh-Ritz Method (for Quantum Calculations) |
| DXRL | Deep X-ray Lithography |