| Acronym | Meaning |
| HIPE | High Internal Phase Emulsion |
| FOEA | First-order Eikonal Approximation |
| KKRZ | Korringa-Kohn-Rostoker-Ziman (in Energy-band Calcns.) |
| OES | Occupational Exposure Standard |
| HEN | High-efficiency Nebulizer |
| ATCM | Air Toxics Control Measure |
| NCTTA | National Competitiveness Technology Transfer Act |
| CLD | Certainly Lethal Dose |
| IASC | International Arctic Science Committee |
| CCGM | Cabrera-Celli-Goodman-Manson (at. Scattering Theory) |