| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Beta rays | Aerospace | Energetic electrons emanating from the nuclei of certain radioactive elements. (references) | |
| Beta rays | Health | A stream of positive or negative electrons ejected with high energy from a disintegrating atomic nucleus; most biomedically used isotopes emit negative particles (electrons or negatrons, rather than positrons). Cathode rays are low-energy negative electrons produced in cathode ray tubes, also called television tubes or oscilloscopes. (references) | |
| Beta rays | Physics | A stream of beta particles. Source: European Union. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
