| Acronym | Meaning |
| DBL | Diffusive Boundary Layer |
| SCRAM | EPA Support Center For Regulatory Air Models |
| TDM | Truncated Diagonalization Method |
| GPD | Gaussian Phase Distribution |
| CSFR | Colony-stimulating Factor Receptor |
| OPIT | Oxide Powder In Tube |
| DSP | Digital Signal Processor |
| GRINSCH | Graded-index Separate Confinement Heterostructure |
| LRTI | Lower Respiratory Tract Infection |
| HAA | Haloacetic Acid |