| Acronym | Meaning |
| PDG | Patent Documentation Group |
| SIGLE | System For Information On Grey Literature In Europe |
| APSGF | Antisymmetrical Product Of Strongly Orthogonal Group Functions (a Wave Function) |
| PEAD | Polietileno De Alta Densidad |
| TEOS | Tetraethyl Orthosilicate |
| NEE | Net Ecosystem Exchange |
| HIGFET | Heterostructure Insulated Gate Field Effect Transistor |
| MBSCI | Minimum Basis Set Configuration Interaction |
| GTP | Group-transfer Polymerization |
| UDDS | Urban Dynamometer Driving Schedule |