| Acronym | Meaning |
| TOM | Total Organic Matter |
| NHLBI | National Heart |
| UNS | Unified Numbering System For Metals And Alloys |
| MDGI | Mammary Gland-derived Growth Inhibitor |
| RAP | Receptor-associated Protein |
| RCIS | Resource Center Information System |
| CERL | Construction Engineering Research Laboratory (US Army) |
| ESA | Electrostatic Analyzer |
| MURINES | Muon Ring Neutrino Experiments |
| ADARD | Acid Deposition And Atmospheric Research Division |