| Acronym | Meaning |
| DIPPR | Design Institute For Physical Property Data |
| NPS | Nonpoint Source |
| ARAT | Avion De Recherche Atmospherique Et Teledetection |
| EMT | Effective Mass Theory (in Electronic Wave Functions Calcn.) |
| BTEM | Band Target Entropy Minimization |
| OP | Overlap Population |
| TEC | Teo Electron Counting Method (for Complexes |
| DEC | Department Of Environmental Conservation |
| RRIM | Reinforced Reaction-injection Molding |
| BIF | Boilers And Industrial Furnaces (USEPA Rule) |