| Acronym | Meaning |
| PA/SI | Preliminary Assessment/Site Inspection |
| PESC | Photoelectrochemical Solar Cell |
| NWEA | National Wood Energy Association |
| RATM | Renormalized Average T-matrix (for D.-of-states Calcns.) |
| PASADENA | Para-hydrogen And Synthesis Allow Dramatically Enhanced Nuclear Alignment |
| HIERD | Heavy Ion Elastic Recoil Detection |
| YOS | Yttrium Orthosilicate |
| GIMS | Grazing Incidence Moessbauer Spectroscopy |
| CMB | Chemical Mass Balance |
| DMCC | Dimethylcarbamyl Chloride |