| Acronym | Meaning |
| IMAGE | International Monitor For Auroral Geomagnetic Effects |
| PTX | Pertussis Toxin |
| IPF | Inorg. Polymer Flocculant |
| ELCD | Electrolytic Conductivity Detection |
| GNRH | Gonadotropin Releasing Hormone |
| CAE | Cis-acting Element |
| ISPD | Ion-selective Photodiode |
| BSSE | Basis-set Superposition Error |
| DFA | Discriminant Function Analysispar |
| UCCSD | (spin) Unrestricted CCSD |