| Acronym | Meaning |
| PAC | Polycyclic Aromatic Compound |
| IDD | Insulin-dependent Diabetes |
| ISAW | Interactive Self-avoiding Walk [modeling] |
| POA | Preoptic Area |
| ODC | Orientation Distribution Coeffs. |
| HEM | Heat-exchanger Method (in Manuf. Of Crystalline Silicon) |
| BMC | Benchmark Concentration |
| SRT | Sludge Or Solids Retention Time |
| OTTLE | Optically Transparent Thin-layer Electrode |
| EBPVD | Electron Beam Physical Vapor Deposition |