| Acronym | Meaning |
| PCMO | Precanonical Molecular Orbital |
| OPC | Ordinary Portland Cement |
| CTE | Constitutive Transport Element |
| SOCI | Second-order Configuration Interaction |
| SCCR | Self-consistent Current Relaxation (in Electronic Dynamic Structure Factor Calcns.) |
| NCRPM | National Council On Radiation Protection And Measurements |
| LERPC | Ligand-exchange Reagent Performance Check |
| MASIF | Measurement And Analysis Of Surface Interaction Forces |
| HABR | Hybrid Anaerobic Baffled Reactor (for Wastewater Treatment) |
| RCP | Recursive Correlation Partitioning |