| Acronym | Meaning |
| SMIDG | Submicro Inverse-detection Gradient |
| PDF | Probability-distribution Function |
| QBO | Quasi-biennial Oscillation (atm.) |
| PPG | Polypropylene Glycol |
| MOCED | Molecular Orbital Constrained Electron Diffraction Method |
| CSD | Controlled Spray Deposition |
| SWORD | Surveillance Of Work Related And Occupational Respiratory Disease |
| WENDB | Water Enforcement National Data Base |
| SSRL | Stanford Synchrotron Radiation Laboratory |
| CHM | Complete Hydatidiform Mole |