| Acronym | Meaning |
| CIPW | Cross, Iddings, Pirrson, And Washington (for Geology Terminology) |
| ACD | Annealed Cold Drawn |
| FHMO | Fenske-Hall MO |
| NPSO | Nonpaired Spatial Orbital |
| IDF | International Dairy Federation |
| OOS | Optical-oscillator Strength |
| BSRT | Biological Solids Retention Time |
| PTM | Perturbation Trajectory Method (in Gas-surface Collision Dynamics) |
| CFSAN | Center For Food Safety & Applied Nutrition |
| DAD | Diode Array Detector |