1 thermionic | Definition of thermionic
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thermionic

adjective
therm·​ion·​ic | \ ËŒthÉ™r-(ËŒ)mÄ«-ˈä-nik How to pronounce thermionic (audio) \

Definition of thermionic

: relating to, using, or being the emission of charged particles (such as electrons) by an incandescent material

Examples of thermionic in a Sentence

Recent Examples on the Web

 The thermionic diode heat engine invented by Nottingham and Hatsopoulos in the 1950s finally went all the way and produced power with no moving parts. — Charles A. Berg, The New York Review of Books, "Watt Nonsense," 6 June 2019 The thermionic diode heat engine invented by Nottingham and Hatsopoulos in the 1950s finally went all the way and produced power with no moving parts. — Charles A. Berg, The New York Review of Books, "Watt Nonsense," 6 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'thermionic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of thermionic

1909, in the meaning defined above

History and Etymology for thermionic

thermion charged particle from an incandescent source, from therm- + ion

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Rhyming Dictionary: Words that rhyme with thermionic

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