| Acronym | Meaning |
| SECI | Single Excitation Configuration Interaction |
| NASBA | Nucleic Acid Sequence-based Amplification |
| LSM | Land Surface Model |
| TMIC | Toxic Materials Information Center |
| ELRA | Enzyme-linked Receptor Assay |
| DRS | Dielectric Relaxation Spectroscopy |
| IPPP | Inner Projections (of The) Polarization Propagator (in Calcns. On Nuclear Spin Coupling) |
| IAEG | International Association Of Engineering Geology |
| MGED | Microarray Gene Expression Database |
| IODE | International Oceanographic Data/Information Exchange (IOC) |