| Acronym | Meaning |
| CITAC | Cooperation On International Traceability And Analytical Chemistry |
| LSER | Linear Solvation Energy Relationship |
| TCC | Thermal Contact Cracking |
| HVAC | Heating, Ventilating, Air-conditioning |
| STS | Slater Transition State (for Calcg. Electronic Transitions Of Atoms And Molecules) |
| VPT | Variational Perturbation Theory |
| PTP | Protein Tyrosine Phosphatase |
| CVPT | Canonical Van Vleck Perturbation Theory |
| SAED | Selected Area Electron Diffraction |
| SCGF | Stem Cell Growth Factor |