thermion

[ thurm-ahy-uh n, -on; thur-mee-uh n ]
/ ˈθɜrmˌaɪ ən, -ɒn; ˈθɜr mi ən /
SEE SYNONYMS FOR thermion ON THESAURUS.COM

noun Physics.

an ion emitted by incandescent material.

Origin of thermion

First recorded in 1910–15; therm- + ion

OTHER WORDS FROM thermion

therm·i·on·ic, adjective therm·i·on·i·cal·ly, adverb

Words nearby thermion

thermette, thermic, thermic fever, thermidor, thermidorian, thermion, thermionic, thermionic current, thermionic emission, thermionic tube, thermionic valve

Words related to thermionic

computerized, anodic, cathodic, voltaic

Example sentences from the Web for thermionic

  • I have even made an attempt to understand the mystery that is called the Thermionic Valve.

    The Tower of Oblivion |Oliver Onions

  • Above the mantel of the lodge's thermionic fireplace was hung a brilliant cascading stereo of Yosemite Falls in misty motion.

    Deepfreeze |Robert Donald Locke

British Dictionary definitions for thermionic (1 of 2)

thermionic
/ (ˌθɜːmɪˈɒnɪk) /

adjective

of, relating to, or operated by electrons emitted from materials at high temperatures a thermionic valve

British Dictionary definitions for thermionic (2 of 2)

thermion
/ (ˈθɜːmɪən) /

noun

physics an electron or ion emitted by a body at high temperature

Scientific definitions for thermionic

thermion
[ thûr′mī′ən ]

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.