| Acronym | Meaning |
| OCEE | Overlap Corrected Electronegativity Equalization |
| ECP | Estimated Critical Position |
| LAT | Linker For Activation Of T Cells |
| VADW | Vibrationally-adiabatic Distorted-wave Method |
| OEL | Occupational Exposure Limit |
| LSR | Lanthanide Shift Reagent |
| NMDS | Nonmetric Multidimensional Scaling |
| IPPP | Inner Projections (of The) Polarization Propagator (in Calcns. On Nuclear Spin Coupling) |
| OEMO | One Electron Molecular Orbital |
| NIMR | National Institute For Medical Research |