| Acronym | Meaning |
| MMAD | Mass Median Aerodynamic Diameter (aerosol) |
| IMF | Intermediate Mass Fragment |
| NEAR | Near Earth Asteroid Rendezvous |
| AIRDAS | Airborne Infrared Disaster Assessment System |
| IESWTR | Interim Enhanced Surface Water Treatment Rule |
| NBI | Neutral Beam Injection |
| SBH | Schottky-barrier Height |
| CDA | Cylindrical Deflector Analyzer |
| AUSB | Aerobic Upflow Sludge Blanket |
| RHPA | Reverse Hemolytic Plaque Assay |