| Acronym | Meaning |
| IEPA | Illinois Environmental Protection Agency |
| TO | Topological Orbital (in Graph Theory Of Molecules) |
| GVP | Gasoline Vapor Pressure |
| SLC | SLAC Linear Collider |
| PPES | Photopyroelectric Spectroscopy |
| IARC | International Agency For Research On Cancer |
| XMA | X-ray Microanalysis |
| AGGG | Advisory Group On Greenhouse Gases |
| QUAX | Quantitative Phase-Analysis With X-ray Powder Diffraction |
| HDM | House Dust Mite |