| Acronym | Meaning |
| OLCAO | Orthogonalized Linear Combination Of Atomic Orbitals |
| AAFEB | Anaerobic Attached Film Expanded Bed |
| ICAME | International Commission On Application Of Moessbauer Effect |
| CFB | Circulating Fluidized Bed |
| DSPB | Distorted-wave Strong-potential Born (approxn.) |
| QCDL | Quenched Cavity Dye Laser |
| NSE | Nonlinear Schroedinger Equation |
| HTHS | High-temperature High-shear |
| CIMS | Chemical Ionization Mass Spectrometry |
| CME | Chemically Modified Electrode |