| Acronym | Meaning |
| NPR | Net Protein Retention |
| NASP | National Aerospace Plane |
| PBM | Proton Beam Micromachining |
| CANDA | Computer Aided New Drug Application |
| BODIPY | Dipyrrometheneboron Difluoride |
| CIOSA | Classical Infinite-order Sudden Approxn. |
| HCN | US Historical Climatology Network |
| RIOMETER | Relative Ionospheric Opacity Meter |
| CAM | Complex Angular Momentum (for Rotationally Inelastic Scattering) |
| SS | Suspended Solids |