| Acronym | Meaning |
| IRN | Indicator Radionuclide |
| APRIL | A Proliferation-inducing Ligand |
| PCS | Photon Correlation Spectroscopy |
| HFCVD | Hot Filament Chemical Vapor Deposition |
| NEPP | National Energy Policy Plan |
| TMR | Tunneling Magnetoresistance |
| DIN | Direct Injection Nebulizer |
| PEOE | Partial Equalization Of Orbital Electronegativity (model) |
| CMS | Carbogenic Molecular Sieves |
| FROG | Frequency-resolved Optical Grating |