| Acronym | Meaning |
| RNRA | Resonant Nuclear Reaction Analysis |
| PWTF | Plane-wave Translation Factors (in Atom-ion Inelastic Collisions) |
| MCS | Multiple Cloning Site |
| NIMR | National Institute For Medical Research |
| CDRH | Center For Devices And Radiological Health |
| NAD | Nicotinamide Adenine Dinucleotide |
| LPE | Liquid-phase Epitaxy |
| PUHFS | Projected Unrestricted-Hartree-Fock-Slater |
| CWLM | Continuous Working Level Monitor |
| IASC | International Arctic Science Committee |