| Acronym | Meaning |
| PPMA | Parts Per Million Atomic |
| PWFB | Plane-wave First Born |
| PPE | Porcine Pancreatic Elastase |
| GTAW | Gas-tungsten Arc Welding |
| TAP | Toxic Air Pollutant |
| NSR | Normalized Stoichiometric Ratio |
| ALAD | Delta-aminolevulinic Acid Dehydratase (lead Poisoning Indicator) |
| AFCEE | Air Force Center For Environmental Excellence |
| MRAM | Magnetic Random Access Memory |
| HT-EOVC | High-temperature Engine Oil Viscosity Classification |