| Acronym | Meaning |
| QCA | Quasichemical Approxn. (in Calcns. On Semiconductors) |
| ICON | International Council On Nanotechnology |
| ANRF | Area Normalization With Response Factors |
| AMAD | Activity Median Aerodynamic Diameter |
| FRM | Fiber-reinforced Metals |
| AVHRR | Advanced Very High Resolution Radiometer (NASA) |
| PPAR | Peroxisome Proliferator-activated Receptor |
| HSC | Health And Safety Commission (UK) |
| HPDSC | High-pressure Differential Scanning Calorimetry |
| FIRMR | Federal Information Resources Management Regulations |