| Acronym | Meaning |
| HMPGI | Hybrid Multiple-prism Grazing-incidence |
| TPA | Tissue Plasminogen Activator |
| AERC | Association Of Ecosystem Research Centers |
| CPDAM | Cumulative Potential-derived Atomic Multipole (calcn. Method) |
| MAWP | Maximum Allowable Working Pressure |
| NAMF | Non-asbestos Mineral Fibers |
| SME | Solid-metal Embrittlement |
| FAAS | Flame Atomic Absorption Spectroscopy |
| ROD | Record Of Decision |
| FPC | Fractional Parentage Coeff. (in Group-theor. Calcns.) |