| Acronym | Meaning |
| IAMAP | International Association Of Meteorology And Atmospheric Physics (ICSU) |
| TED | Transmission Electron Diffraction |
| TMDL | Total Maximum Daily Load |
| HDTBPB | Hexadecyltributylphosphonium Bromide |
| HMM | Half Molecule Model (for Electron Scattering By Molecules) |
| FGHAZ | Fine Grain Heat-affected Zone |
| FEBO | Free Energy Born-Oppenheimer |
| SEVB | Semiempirical Valence Bond |
| CMF | Colloid Metal Film |
| NSH | Normalized Spherical Harmonic (hamiltonian) |