| Acronym | Meaning |
| OSRD | Office Of Scientific Research And Development |
| EMA | Electron Microprobe Analysis |
| IXS | International XAFS Society |
| CRYSIS | Cryogenic Stockholm Ion Source |
| FPLC | Fast Protein Liquid Chromatography |
| LSW | Localized Spherical Wave (in Electronic Structure Calcns.) |
| VBR | Variational Basis Representation (in Quantum Calcns.) |
| DHHS | Department Of Health And Human Services |
| FFP | Fresh Frozen Plasma |
| QIOS | Quantum Infinite-order Sudden (method For Collisions) |