| Acronym | Meaning |
| BMC | Benchmark Concentration |
| EIE | Easily Ionized Element |
| DSPES | Depth-selective Photoelectron Spectroscopy |
| DDBJ | DNA Data Bank Of Japan |
| BO | Biorthonormal (wave Function) |
| CEDIA | Cloned-enzyme Donor Immunoassay |
| ZSR | Zdanovskii-Stokes-Robinson [model] |
| EOD | Engineering Operations Division |
| PSC | Primary Sclerosing Cholangitis |
| EKF | Extended Kalman Filter |