| Acronym | Meaning |
| ECBM | Extended Classical Over-barrier Model (in Calcns. On Inelastic Ion-atom Colisions) |
| BID | Buoyancy Induced Dispersion |
| ITRS | International Technology Roadmap For Semiconductors |
| QELS | Quasi-Elastic Light Scattering |
| RER | Rough Endoplasmic Reticulum |
| IAEG | International Association Of Engineering Geology |
| AF | Alternating Field Demagnetization |
| IEH | Intermediate Effective Hamiltonian |
| ARIC | Acid Rain Information Clearinghouse |
| PRM | Primary Reference Material |