| Acronym | Meaning |
| UCID | Unrestricted CI (with) Single (and) Double (excitations) |
| ASHRAE | American Society Of Heating |
| RAST | Radioallergosorbent Test (immunoassay) |
| HMAC | Hazardous Materials Advisory Council |
| ACRR | Annular Core Research Reactor |
| LCA | Life Cycle Assessment |
| FMOS | Flavin-containing Monooxygenases |
| CCB | Calcium Channel Blocker |
| STNAA | Short Time Neutron Activation Analysis |
| PNDO | Partial Neglect Of Differential Overlap |