| Acronym | Meaning |
 | HSC | High Conversion Soaker (cracking) [petroleum Viscosity-breaking] |
| GHRF | Growth Hormone-releasing Factor |
| PEM | Photoelectron Microscopy |
| FNSI | Finding Of No Significant Impact |
| TRIGA | Training, Research, Isotopes, General Atomic (nuclear Fuel) |
| FPGA | Field-programmable Gate Array |
| NODS | NASA Ocean Data System |
| AHA | American Heart Association |
| BTEX | Benzene, Toluene, Ethyl Benzene, And Xylene |
| PAHO | Pan American Health Organization |
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