therm·i·on (thûr m   n)n. An electrically charged particle, especially an electron, emitted by a conducting material at high temperatures. therm i·onic (-m- n k) adj. |
thermion [ˈθɜːmɪən]
n
(Physics / General Physics) Physics an electron or ion emitted by a body at high temperature
| thermion (thûrmn) An electrically charged particle or ion that is emitted by a heated conducting material. The electrons emitted from the cathodes of electron tubes (such as cathode ray tubes) are thermions. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | thermion - an electrically charged particle (electron or ion) emitted by a substance at a high temperature subatomic particle, particle - a body having finite mass and internal structure but negligible dimensions |
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