| Acronym | Meaning |
| HGRF | Human Growth Hormone-releasing Factor |
| MCDF-EAL | Multiconfiguration Dirac-Fock-extended Average Level (for Energy Levels And Wave Functions Calcn. For Atoms) |
| HPCCP | High Performance Computing And Communications Program |
| AAGP | Aerobic Attached Growth Process |
| TXRF | Total Reflection X-ray Fluorescence |
| COPM | Carter Ozone Per Mile |
| LEL | Lower Explosion Limit |
| BCR | Bubble Column Reactor |
| IMO | Intermolecular Mol. Orbital |
| CEN | Comite Europeen De Normalization |