| Acronym | Meaning |
| MESIMS | Matrix-enhanced Secondary Ion Mass Spectrometry |
| HRPA | Higher Random Phase Approximation |
| APG | Antisymmetrized Product Of Geminals (wave Function) |
| TSS | Total Suspended Solids |
| AAU | Amendment To Allege Use |
| HENA | High-energy Neutral Atom |
| COARE | Coupled Ocean-Atmosphere Response Experiment |
| SBLA | Sealed Bipolar Lead Acid (battery) |
| ACPCSA | Adiabatic Capture Partial Centrifugal Sudden Approximation |
| PEXAFS | Photoemission Extended X-ray Absorption Fine Structure |