| Acronym | Meaning |
| NAI | Neutral Atom Imaging (astronomical Plasmas) |
| DFS | Daily Flow System (file Within STORET) |
| TBLMTO | Tight-binding Linear (combination Of) Muffin-tin Orbitals |
| EMU | Electromagnetic Unit |
| GWD | Gaussian Wave Packet Dynamics |
| POPW | Partially Orthogonalized Plane Wave |
| ITDHO | Improved Time-dependent Harmonic Oscillator |
| PUFA | Polyunsaturated Fatty Acid |
| PIMIA | Potentiometric Ionophore-modulation Immunoassay |
| NRTI | Nucleoside Reverse Transcriptase Inhibitor |