| Acronym | Meaning |
| CRC | Coupled-reaction-channels (quantum Calcn. Method) |
| MC-DWBA | Multichannel Distorted Wave Born Approxn. |
| IOA | International Ozone Association |
| BPJ | Best Professional Judgement |
| GBT | Generalized Brillouin Theorem |
| CDW | Circumpolar Deep Water |
| RE | Relativistic Eikonal |
| PAZ | Protective Action Zone |
| EXRHF | Extended Restricted Hartree-Fock |
| CT | Disinfection Concentration Contact Time |