| Acronym | Meaning |
| ICDD | International Center For Diffraction Data |
| GDEPT | Gene-directed Enzyme Prodrug Therapy |
| NTNCWS | Nontransient, Noncommunity Water Supplies |
| AOSTRA | Alberta Oil Sands Technology And Research Authority |
| BO | Brueckner Orbital |
| MPL | Maximum Permitted Level |
| POCI | Parent Orbital Configuration Interaction |
| IPEM | Ion-photon Emission Microscopy |
| KCS | K-matrix Centrifugal Sudden (in Mol.-scattering Theory) |
| PM3 | Third-parametric Method |