| Acronym | Meaning |
| DOAS | Differential Optical Absorption Spectroscopy |
| ACF | Anticoagulant Factor |
| AC | Alternating Current |
| CSWP | Centrifugal Sudden [or Coupled States] Wave Packet Method |
| IBS | Irritable Bowel Syndrome |
| AMS | AIRS Area/Mobile Source Subsystem (subsystem Of AIRS) |
| APA | Adiabatic Perturbation Approxn. (for Quantum Calcns. On Fermi Superfluids) |
| BOA | Bidirectional Orbital Approximation (in Valence Bond Theory) |
| LQG | Loop Quantum Gravity |
| DE | Dynamics Explorer (spacecraft) |