| Acronym | Meaning |
| CD | Critical Dimension |
| DSP | Digital Signal Processor |
| IZA | International Zeolite Association |
| USLE | Universal Soil Loss Equation (erosion Model) |
| SPT | Standard Penetration Test |
| NRHF | Numerical Restricted Hartree-Fock |
| ISPM | In-situ Particle Monitor |
| AOI | Automatic Optical Inspection |
| MEIS | Medium Energy Ion Scattering |
| NCHS | National Center For Health Statistics |