| Acronym | Meaning |
| ECDIN | Environmental Chemicals Data And Information Network |
| ICOM | International Congress On Membranes |
| RTF | Replenished Tapped And Fractionated (magma) |
| PVB-CSF | Projected Valence Bond-configuration State Function |
| ALAU | Delta-aminolevulinic Acid Dehydratase In Urine (lead Poisoning Indicator) |
| STN | Scientific And Technical Information Network |
| LASIK | Laser-assisted In Situ Keratomileusis |
| IAD | Ion Assisted Deposition |
| FCC | Flight Control Computer |
| SODAR | Sound Detection And Ranging (meteorological Instrument) |