| Acronym | Meaning |
| LASCS | Light-activated Silicon Controlled Switch |
| PGP | Previous Glacial Period (glacial Maximum Of O18 Stage 6; Predates The LGM) |
| SPAG | Small Particle Aerosol Generator |
| GVB-CI | Generalized Valence Bond-configuration Interaction (wave Function) |
| TQCM | Temperature-controlled Quartz Crystal Microbalance |
| SPHINCS | Sequential PHoton Interrogation And Neutron Counting Signatures |
| OMTP | Overlap-multipole-expansion Procedure |
| HAT | Humid-air Turbine [cycle] |
| XPED | X-ray Photoelectron Diffractometry |
| MSA | Many-trajectory Semiclassical Approxn. (in At.-collision Theory) |