| Acronym | Meaning |
| ABC | ATP-binding Cassette |
| SCM | Self-consistent Multipolar (method In Metal Cluster Calcns.) |
| WVTR | Water Vapor Transmission Rate |
| RAM | Renormalized Atom Model (for Electronic-structure Calcns.) |
| EEAES | Electron-excited Auger Electron Spectroscopy |
| LIP | Laser-induced Plasma |
| BLRG | Broad-line Radio Galaxy |
| ICTP | Telopeptide Of Type-I Collagen |
| WKB | Wentzel-Kramers-Brillouin (phase-shift Formula For Potential Scattering) |
| SOEH | Scaled One-electron Hamiltonian (in SCF Calcns. On Mols.) |