thermion

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therm·i·on

 (thûr′mī′ən)
n.
An electrically charged particle, especially an electron, emitted by a conducting material at high temperatures.

therm′i·on′ic (-mī-ŏn′ĭk) adj.

thermion

(ˈθɜːmɪən)
n
(General Physics) physics an electron or ion emitted by a body at high temperature

therm•i•on

(ˈθɜrmˌaɪ ən, -ɒn; ˈθɜr mi ən)

n.
an ion emitted by incandescent material.
[1910–15]
therm`i•on′ic, adj.

therm·i·on

(thûr′mī′ən)
An electrically charged particle or ion that is emitted by a conducting material when heated by an electric current.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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