| Acronym | Meaning |
| IIW | International Institute Of Welding |
| DSCEMS | Depth Selective Conversion Electron Moessbauer Spectroscopy |
| BARC | Bottom Antireflective Coating |
| FIT | Flow Injection Titration |
| FBE | Flat Bed Electrophoresis |
| EETFC | Environmental Effects |
| RP/M | Reinforced Plastics/mortar |
| OCPSF | Organic Chemical, Plastics, And Synthetic Fiber Industry |
| BI | Bond Increment (method In Calcns. On Large Molecules) |
| HMO | Hueckel Molecular Orbital |