| Acronym | Meaning |
| SCSAG | Small-curvature Semiclassical Adiabatic Ground-state (tunneling Approxn.) |
| PICA | Picosecond Imaging Circuit Analysis |
| NEPP | National Energy Policy Plan |
| ICCD | Intensified Charge-coupled Device |
| NAI | Neutral Atom Imaging (astronomical Plasmas) |
| MECC | Micellar Electrokinetic Capillary Chromatography |
| EOTC | European Organization For Testing And Certification |
| LULU | Locally Undesirable Land Use |
| IAP | Intermittent Aeration Process (for Waste Treatment) |
| CLC | Chloride Channel |