| Acronym | Meaning |
| SCR | Solar Cosmic Rays (related To Spacecraft And Space Travel) |
| PPD | Purified Protein Derivative |
| QSMD | Quantum-stochastic Mol. Dynamics |
| PANAK | Peroxyacetyl Nitrate Aldehyde Ketones |
| PXRF | Polarized X-ray Fluorescence |
| BNCT | Boron Neutron Capture Therapy |
| HPHF | Half-projected Hartree-Fock Model |
| PNP | Purine Nucleoside Phosphorylase |
| DOUBTFUL | Double Quantum Transitions For Finding Unresolved Lines |
| TRAPDOR | Transfer Of Populations In Double Resonance |