| Acronym | Meaning |
| ACID | Acidification Chemistry Information Database |
| RECP-CVC | Relativistic Effective-core Potential With Core-valence Correlation |
| TCL-GME | Time-convolutionless Generalized Master Equation (in Quantum Tunneling Calcns.) |
| MIG | Metal Inert Gas (welding) |
| AWPCF | Air And Water Pollution Control Facilities |
| PTM | Perturbation Trajectory Method (in Gas-surface Collision Dynamics) |
| ADMET | Acyclic Diene Metathesis |
| OB/OD | Open Burn/open Detonation |
| CCF | Correlation Crystal Field |
| FCP | Function Counterpoise (method For Eliminating Basis Set Superposition Error) |