| Acronym | Meaning |
| TDRH | Time-dependent Rotated Hartree (theory) |
| NPC | Niemann-Pick Type C Disease |
| SEE | Space Environment And Effects |
| NAMS | Neutron Activation Mass Spectrometry |
| OPAL | Omni-Purpose Apparatus At LEP |
| ECP | Exchange Core Polarization |
| PEYS | Photoelectron Yield Spectroscopy |
| BASTE | Bay Area Sewage Toxics Emissions |
| FCF | Franck-Condon Factor |
| PWM | Pulse Width Modulation |