| Acronym | Meaning |
| FAEC | Factor Analysis With Equilibrium Constraints |
| ECE | Electrical Conductivity Of Saturation Extract (soils) |
| MCHF | Multiconfiguration Hartree-Fock |
| CEA | Carcinoembryonic Antigen |
| IRBP | Interstitial Retinol-binding Protein |
| NLXC | Nonlocal Exchange Correlation (potential) |
| XLPE | Crosslinked Polyethylene |
| MCDF-OL | Multiconfiguration Dirac-Fock Optimum Level |
| PDVB | Poly(divinyl Benzene) |
| AODP | Advanced Ocean Drilling Program |