| Acronym | Meaning |
| CTA | Cellulose Triacetate (Reg: 9012093) |
| AIN | Advanced Intelligent Networks |
| AMPD | AMP Deaminase |
| IEEM | Ion-electron Emission Microscopy |
| LEAP | Local-electrode Atom Probe |
| GTDA | Generalized Tamm-Dancoff Approximation |
| NES | Neurobehavioral Evaluation System |
| PDFT | Perturbation Density-functional Theory |
| RVS-SCF | Reduced Variational Space-self-consistent Field (in Quantum Calcns. On Hydrogen Bonding) |
| CWA | Clean Water Act |