| Acronym | Meaning |
| NIRA | Near Infrared Reflection Analysis |
| ATDC | After Top Dead Center (gasoline And Diesel Engine Timing) |
| FPEIS | Fine Particulate Emissions Information System |
| NARS | National Asbestos Registry System |
| SLR | Spin-lattice Relaxation |
| CFS | Cubic Feet Per Second |
| PFE | Pressurized Fluid Extraction |
| MGMT | O6-methylguanine-DNA Methyltransferase |
| CCP | Capacitively Coupled Plasma |
| AGB | Asymptotic Giant Branch (stars) |