thermionics

noun, plural in form but singular in construction
therm·​ion·​ics | \ ˌthər-(ˌ)mī-ˈä-niks How to pronounce thermionics (audio) \

Definition of thermionics

: physics dealing with thermionic phenomena

First Known Use of thermionics

1909, in the meaning defined above

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The first known use of thermionics was in 1909

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Dictionary Entries Near thermionics

thermionic current

thermionics

thermionic tube

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Cite this Entry

“Thermionics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermionics. Accessed 19 Sep. 2021.

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