| Acronym | Meaning |
| APB | Antiphase Boundary (crystal Chemistry) |
| THAA | Total Hydrolyzable Amino Acids |
| PNO | Pair Natural Orbital |
| PNDO | Partial Neglect Of Differential Overlap |
| GC | Guanine + Cytosine |
| DIP | Document Image Processing |
| CCAP | Crustacean Cardioactive Peptide |
| TRNOE | Transferred Nuclear Overhauser Effect |
| TDSE | Time-dependent Schroedinger Equation |
| OTEC | Open Tubular Electrochromatography |