| Acronym | Meaning |
| HRP | Horseradish Peroxidase |
| ICR | Intelligent Optical Character Recognition |
| EBIT | Electron Beam Ion Trap |
| INEPT | Insensitive Nuclei Enhanced By Polarization Transfer |
| IEL | Intraepithelial Lymphocyte |
| MSCE | Modified Semiclassical Exchange (aproxn. In Scattering Calcns.) |
| MMAD | Mass Median Aerodynamic Diameter (aerosol) |
| RASSI | Restricted Active Space State Interaction |
| CAUGA | Clifford Algebra Unitary Group Approach |
| LLNL | Lawrence Livermore National Laboratory |