| Acronym | Meaning |
| CSRO | Chemical Short-range Order |
| NETD | Noise Equiv. Temp. Difference |
| JEIP | Joint Emission Inventory Program |
| PHBTD | (number)projected-hartree-bogolyubov Tamm-dancoff(quantum Method) |
| ASA | Acrylonitrile-styrene-acrylate Terpolymer |
| CNDO/2-V | Complete Neglect Of Differential Overlap-potential Method |
| HFET | Highway Fuel Economy Test |
| FBA | Fluidized Bed Afterburner |
| CEMS | Continuous Emissions Monitoring System |
| CPU | Central Processing Unit |