| Acronym | Meaning |
| NPPC | Nuclear Power Plant Consultant |
| IUBS | International Union Of Biological Sciences |
| SOPPA | Second-order Polarization Propagator Approxn. |
| TPPI | Time Proportional Phase Increment |
| ARAC | Atmospheric Release Advisory Capability |
| IEEM | Ion-electron Emission Microscopy |
| DIDP | Diisodecyl Phthalate |
| CBS | Cystathionine Beta-synthase |
| S/MTD | STOL Maneuvering Technology Demonstrator (program) |
| RTRP | Reinforced Thermosetting Resin Pipe |