| Acronym | Meaning |
| APA | Air Pathway Analysis |
| DHF | Decoupled Hartree-Fock |
| STP | Similarity Transformation (based) Perturbation (theory) |
| CSMCS | Carbon Species Methods Comparison Study |
| GIPQ | Gage Invariant Periodic Quantization |
| CFHH-GLF | CFHH-generalized Laguerre Function |
| PDF | Probability Density Function |
| HEK | Human Embryonic Kidney |
| AWMA | Air And Waste Management Association |
| HETA | Hazard Evaluation Technical Assistance Branch (NIOSH) |