| Acronym | Meaning |
| ECL | Environmental Chemical Laboratory |
| DFM | Dark Field Microscopy |
| BI | Bond Increment (method In Calcns. On Large Molecules) |
| CELISA | Competitive Enzyme-linked Immunoabsorbent Assay |
| RB | Renormalized Band (method In Electronic-structure Calcns.) |
| HQE | Hemiquantal Equations |
| MCXD | Magnetic Circular X-ray Dichroism |
| MNDOD | Modified Neglect Of Diatomic Overlap With D At. Orbitals |
| EDRF | Endothelium-derived Relaxing Factor |
| ZFAAS | Zeeman Furnace Atomic Absorption Spectroscopy |