| Acronym | Meaning |
| XCC | Expectation-value Coupled-cluster (in Correlation Energies And Electronic Properties Of Many-electron Systems Calcns.) |
| RONALD | Rocketborne Optical Neutral Gas Analyzer With Laser Diodes |
| DIC | Differential Interference Contrast |
| ECGF | Endothelial Cell Growth Factor |
| HDC | Hydrodynamic Chromatography |
| GIXAS | Grazing Incidence X-ray Absorption Spectroscopy |
| CCOHS | Canadian Centre For Occupational Health And Safety |
| CNPPA | Commission On National Parks And Protected Areas |
| CPA | Coupled-pair Approximation |
| EMP | Empirical Pseudopotential Method |