| Acronym | Meaning |
| GGWPD | Generalized Gaussian Wave-packet Dynamics |
| MRSD-CI+D | MRSD-CI (with) Davidson Correction |
| CNDO/2-FPP | Complete Neglect Of Differential Overlap With Finite Perturbation And Polarization |
| ICAO | International Civil Aviation Organization |
| HDD | Halogenated Dibenzodioxin(s) |
| NUR | Nitrate Utilization Rate |
| SPHEM | Superfund Public Health Evaluation Manual |
| IMROX | Immersed Rotation Oxidation |
| CEEL | Community Emergency Exposure Level |
| IPNSO | Independent-pair Natural Spin Orbital |