| Acronym | Meaning |
| OCAMS | Orbital Correspondence Analysis In Maximum Symmetry |
| ELCD | Electrolytic Conductivity Detection |
| NTIMS | Negative Thermal Ionization Mass Spectrometry |
| IBAE | Ion Beam Assisted Etching |
| GIAO | Gage Invariant Atomic Orbital |
| NCS | Notification Of Compliance Status |
| EEXAPS | Electron Excited X-ray Appearance Potential Spectroscopy |
| MTBF | Mean Time Between Failure |
| SPOS | Solid Phase Organic Synthesis |
| EIP | Eigenvalue-independent Partitioning (in Coupled-cluster Calcns.) |