| Acronym | Meaning |
| PTNO | Perturbation Theory Natural Orbital |
| LTH | Luteotropic Hormone |
| CAW | Carbon Arc Welding |
| FLAPW | Full-potential Linearized Augmented Plane Wave |
| SPMD | Semipermeable Membrane Device |
| FOEA | First-order Eikonal Approximation |
| HASP | Harmonically Analyzed Sensitivity Profile |
| CZT | Cadmium Zinc Telluride |
| LDA | Linear Diode Array |
| HCG | Human Chorionic Gonadotropin |