| Acronym | Meaning |
| LCGO | Linear Combination Of Gaussian Orbitals |
| THGA | Transversely Heated Graphite Atomizer |
| HPL | Human Placental Lactogen |
| SAFM | Scanning Acoustic Force Microscopy |
| SERI | Solar Energy Research Institute |
| CVAAS | Cold Vapor Atomic Absorption Spectrometry |
| SPIRIT | Single Photon Ionization Resonance Ionization To Threshold |
| LCFC | Linear Combination Of Fragment Configuration |
| TDFGH | Time-dependent Fourier Grid Hamiltonian (method) |
| CSWP | Centrifugal Sudden [or Coupled States] Wave Packet Method |