| Acronym | Meaning |
| VISTTA | Visibility Impairment From Sulfur Transformation And Transport In The Atmosphere |
| HUD | Housing And Urban Development |
| TCS | Total Current Spectroscopy |
| IESWTR | Interim Enhanced Surface Water Treatment Rule |
| NMJ | Neuromuscular Junction |
| IDA | Interdigitated Array (microelectrodes) |
| SCPA | Self-consistent Phonon Approximation (for Lattice Dynamics Of Quantum Crystals) |
| DTL | Drift Tube Linac |
| EDHF | Endothelium-derived Hyperpolarizing Factor |
| DWPE | Distorted-wave (with) Polarization (and) Exchange |