| Acronym | Meaning |
| IPAA | Instrumental Photon Activation Analysis |
| HHOB | High-energy Higher-order Born (approxn. For Scattering Calcns.) |
| LBO | Localized Born-Oppenheimer |
| SETB | Semiempirical Tight Binding |
| AICS | Australian Inventory Of Chemical Substances |
| HSS | High-speed Steel |
| CCDPPA | Coupled-cluster With Double Excitation Polarization Propagator |
| CC | Coupled Channel |
| TBSI | N-tert-butyl-2-benzothiazyl Sulfenimide |
| GERM | Geochem. Earth Ref. Model |