| Acronym | Meaning |
| CCM | Cyclic Cluster Model (in CNDO For Deep Levels In Solids) |
| IATA | International Air Transport Association (Geneva |
| MCM | Minichromosome Maintenance |
| MTCT | Mother-to-child Transmission |
| ISAS | Japanese Institute Of Space And Astronomical Science |
| SCCF | Spin-correlated Crystal Field |
| ASPEN | Advanced System For Process Engineering (DOE Software Package) |
| DISI | Direct-injection Spark-ignition |
| ERP | Event-related Potential |
| ILM | Immobilized Liquid Membrane |