| Acronym | Meaning |
| IASPEI | International Association Of Seismology And Physics Of The Earth's Interior |
| LOIS | Loss Of Interim Status |
| IAVI | International AIDS Vaccine Initiative |
| ERD | Electron Recoil Detection |
| SOP | Split-operator Propagator |
| WINDII | Wind Imaging Interferometer |
| PPM | Parts Per Million |
| MCDW | Matrix Continuum Distorted Wave |
| PACAP | Pituitary Adenylate Cyclase-activating Polypeptide |
| IBAE | Ion Beam Assisted Etching |