| Acronym | Meaning |
| GESAMP | Group Of Experts On The Scientific Aspects Of Marine Pollution |
| FBBR | Fluidized Bed Biofilm Reactor |
| XPED | X-ray Photoelectron Diffractometry |
| FCA | Frozen-core Appproximation |
| CEAREX | Coordinated Eastern Arctic Experiment |
| PAPP-A | Pregnancy-associated Plasma Protein A |
| NTB | Nonorthogonal Tight-binding |
| CWTM | Compound Weaire-Thorpe Model (in Electronic-structure Calcns.) |
| OEMTB | One-electron Mol. Tight-binding (for Electronic Structure) |
| DPIA | Digital Printing And Imaging Association |