| Acronym | Meaning |
| BK | Brinkman-Kramers (approxn. In Ion-mol. Collision Quantum Calcn.) |
| DIP | Document Image Processing |
| APDB | Antiphase Domain Boundary |
| NAL | No Action Level |
| IAP | Imaging Atom Probe |
| CIEIA | Competitive Inhibition Enzyme Immunoassay |
| OPPT | Office Of Pollution Prevention And Toxics (US EPA) |
| MOSHO | Maximum Overlap Symmetry Hybrid Orbital |
| ESSESA | Expert System For Structure Elucidation From Spectral Analysis |
| HFA | Humic And Fulvic Acids |