| Acronym | Meaning |
| HNPCC | Hereditary Nonpolyposis Colorectal Carcinoma |
| ACHRE | Advisory Committee On Human Radiation Experiments |
| NMOS | Negative Channel Metal-oxide Semiconductor |
| DOT | Diffuse Optical Tomography |
| IEL | Independent Electron (model In Ion-impact Ionization Calcns.) |
| NAICS | North American Industrial Classification System |
| LACO | Linearized Atomic Cell Orbital (in Energy-band Calcn.) |
| FAM | Friable Asbestos-containing Material |
| CRAF | Comet Rendezvous Asteroid Flyby |
| CLL | Chronic Lymphocytic Leukemia |