Definition of thermionics in English:

thermionics

Line breaks: ther¦mi|on¦ics
Pronunciation: /θəːmɪˈɒnɪks
 
/

noun

[treated as singular]
The branch of science and technology concerned with thermionic emission.
More example sentences
  • Efficient, direct energy conversion devices powered by solid state thermionics have the potential to bring strategic and economic benefits to many aerospace, military and commercial applications.
  • It has invented a semiconductor technology that converts heat from a wide variety of sources to electrical energy using solid state thermionics.

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